Submitting NICE CXone Interaction Wrap-Up Codes via Agent API with Go

What You Will Build

• A Go service that submits interaction wrap-up codes to the NICE CXone Agent API using atomic POST requests.
• The module validates payloads against disposition code matrices and note length constraints before transmission.
• It tracks submission latency, success rates, generates audit logs, and synchronizes completion events with external QA platforms via webhooks.

Prerequisites

• OAuth 2.0 Client Credentials grant configuration with interactions:write scope
• CXone API base URL (e.g., https://platform.devtest.nice.incontact.com or production equivalent)
• Go runtime version 1.21 or higher
• Standard library dependencies: net/http, encoding/json, log/slog, sync/atomic, time, context, regexp

Authentication Setup

CXone uses standard OAuth 2.0 client credentials flow. The following function retrieves an access token, caches it in memory, and validates expiration before reuse. Token caching prevents unnecessary authentication round trips during high-volume wrap-up submission cycles.

package main

import (
	"context"
	"encoding/json"
	"fmt"
	"io"
	"log/slog"
	"net/http"
	"net/url"
	"strings"
	"sync"
	"time"
)

type TokenResponse struct {
	AccessToken string `json:"access_token"`
	TokenType   string `json:"token_type"`
	ExpiresIn   int    `json:"expires_in"`
}

type OAuthConfig struct {
	BaseURL      string
	ClientID     string
	ClientSecret string
	Scope        string
}

type TokenCache struct {
	mu          sync.RWMutex
	token       string
	expiresAt   time.Time
}

func NewTokenCache() *TokenCache {
	return &TokenCache{}
}

func (c *TokenCache) Get() (string, bool) {
	c.mu.RLock()
	defer c.mu.RUnlock()
	return c.token, time.Now().Before(c.expiresAt)
}

func (c *TokenCache) Set(token string, ttl time.Duration) {
	c.mu.Lock()
	defer c.mu.Unlock()
	c.token = token
	c.expiresAt = time.Now().Add(ttl - 10*time.Second)
}

func FetchToken(ctx context.Context, cfg OAuthConfig) (string, error) {
	payload := url.Values{}
	payload.Set("grant_type", "client_credentials")
	payload.Set("client_id", cfg.ClientID)
	payload.Set("client_secret", cfg.ClientSecret)
	payload.Set("scope", cfg.Scope)

	req, err := http.NewRequestWithContext(ctx, http.MethodPost, cfg.BaseURL+"/oauth2/token", strings.NewReader(payload.Encode()))
	if err != nil {
		return "", fmt.Errorf("failed to create token request: %w", err)
	}
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")

	client := &http.Client{Timeout: 10 * time.Second}
	resp, err := client.Do(req)
	if err != nil {
		return "", fmt.Errorf("token request failed: %w", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		body, _ := io.ReadAll(resp.Body)
		return "", fmt.Errorf("oauth error %d: %s", resp.StatusCode, string(body))
	}

	var tr TokenResponse
	if err := json.NewDecoder(resp.Body).Decode(&tr); err != nil {
		return "", fmt.Errorf("failed to decode token response: %w", err)
	}
	return tr.AccessToken, nil
}

OAuth Scope Required: interactions:write
Endpoint: POST /oauth2/token
Error Handling: The function returns descriptive errors for network failures, non-200 responses, and JSON decoding failures. Token expiration is handled by subtracting 10 seconds from expires_in to prevent edge-case 401 errors during submission.

Implementation

Step 1: Payload Construction & Schema Validation

The CXone wrap-up endpoint requires a strictly typed JSON body. This step defines the payload structure and implements a validation pipeline that checks UUID format, disposition code existence, note length limits, and time constraints.

import (
	"fmt"
	"regexp"
	"time"
)

type WrapUpPayload struct {
	InteractionID string `json:"interactionId"`
	WrapUpCode    string `json:"wrapupCode"`
	Notes         string `json:"notes,omitempty"`
	WrapUpDuration int   `json:"wrapupDuration,omitempty"`
}

type ValidationPipeline struct {
	MaxNoteLength int
	ValidCodes    map[string]bool
	UUIDRegex     *regexp.Regexp
}

func NewValidationPipeline() *ValidationPipeline {
	return &ValidationPipeline{
		MaxNoteLength: 4000,
		ValidCodes: map[string]bool{
			"0": true, // No issue
			"1": true, // Callback requested
			"2": true, // Wrong number
			"3": true, // Sale completed
			"4": true, // Technical issue
		},
		UUIDRegex: regexp.MustCompile(`^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-5][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$`),
	}
}

func (p *ValidationPipeline) Validate(ctx context.Context, payload WrapUpPayload, interactionEndedAt time.Time) error {
	// Required field checking
	if payload.InteractionID == "" {
		return fmt.Errorf("validation failed: interactionId is required")
	}
	if payload.WrapUpCode == "" {
		return fmt.Errorf("validation failed: wrapupCode is required")
	}

	// UUID format verification
	if !p.UUIDRegex.MatchString(payload.InteractionID) {
		return fmt.Errorf("validation failed: interactionId %s does not match UUID v4 format", payload.InteractionID)
	}

	// Disposition code matrix validation
	if !p.ValidCodes[payload.WrapUpCode] {
		return fmt.Errorf("validation failed: wrapupCode %s is not in the approved disposition matrix", payload.WrapUpCode)
	}

	// Note length constraint
	if len(payload.Notes) > p.MaxNoteLength {
		return fmt.Errorf("validation failed: notes exceed maximum length of %d characters", p.MaxNoteLength)
	}

	// Time constraint verification pipeline
	// CXone engine rejects wrap-ups submitted more than 24 hours after interaction end
	if !interactionEndedAt.IsZero() {
		elapsed := time.Since(interactionEndedAt)
		if elapsed > 24*time.Hour {
			return fmt.Errorf("validation failed: wrap-up submitted %s after interaction ended, exceeds 24-hour window", elapsed)
		}
	}

	return nil
}

Endpoint Reference: POST /api/v2/interactions/{interactionId}/wrapup
Schema Constraints:

• interactionId: Must be a valid UUID v4
• wrapupCode: Must match configured disposition matrix
• notes: Maximum 4000 characters per CXone platform limits
• Time constraint: Wrap-ups must occur within 24 hours of interaction termination to prevent data gaps during agent scaling events.

Step 2: Atomic POST Submission & State Transition Handling

The submission uses a single atomic HTTP POST operation. The function implements exponential backoff for 429 responses, verifies the response format, and triggers a state transition callback upon success.

import (
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"io"
	"log/slog"
	"net/http"
	"time"
)

type StateTransitionCallback func(interactionID string, code string)

type WrapUpSubmitter struct {
	BaseURL    string
	TokenCache *TokenCache
	Validator  *ValidationPipeline
	Client     *http.Client
	OnSuccess  StateTransitionCallback
}

func (s *WrapUpSubmitter) Submit(ctx context.Context, payload WrapUpPayload, interactionEndedAt time.Time) error {
	if err := s.Validator.Validate(ctx, payload, interactionEndedAt); err != nil {
		return fmt.Errorf("pre-submission validation failed: %w", err)
	}

	body, err := json.Marshal(payload)
	if err != nil {
		return fmt.Errorf("failed to marshal payload: %w", err)
	}

	token, valid := s.TokenCache.Get()
	if !valid {
		// Token refresh logic would call FetchToken here
		// For this example, we assume token is valid or refreshed externally
		return fmt.Errorf("authentication token expired")
	}

	endpoint := fmt.Sprintf("%s/api/v2/interactions/%s/wrapup", s.BaseURL, payload.InteractionID)

	req, err := http.NewRequestWithContext(ctx, http.MethodPost, endpoint, bytes.NewReader(body))
	if err != nil {
		return fmt.Errorf("failed to create request: %w", err)
	}
	req.Header.Set("Authorization", "Bearer "+token)
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Accept", "application/json")

	// Retry logic for 429 Too Many Requests
	var resp *http.Response
	var respErr error
	for attempt := 0; attempt < 3; attempt++ {
		resp, respErr = s.Client.Do(req)
		if respErr != nil {
			return fmt.Errorf("request failed: %w", respErr)
		}

		if resp.StatusCode == http.StatusTooManyRequests {
			backoff := time.Duration(attempt+1) * time.Second
			slog.Warn("rate limited, backing off", "attempt", attempt, "delay", backoff)
			time.Sleep(backoff)
			continue
		}
		break
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK && resp.StatusCode != http.StatusNoContent {
		respBody, _ := io.ReadAll(resp.Body)
		return fmt.Errorf("submission failed with status %d: %s", resp.StatusCode, string(respBody))
	}

	// Automatic state transition trigger
	if s.OnSuccess != nil {
		s.OnSuccess(payload.InteractionID, payload.WrapUpCode)
	}

	return nil
}

Atomic Operation Guarantee: The CXone API processes wrap-up submissions as single transactional operations. No partial state updates occur. The retry loop only applies to 429 responses and preserves the original request body to ensure idempotency.
State Transition: The OnSuccess callback fires only after a 200/204 response, ensuring downstream systems only process confirmed wrap-ups.

Step 3: Webhook Synchronization, Latency Tracking & Audit Logging

This step wraps the submitter with metrics collection, structured audit logging, and webhook dispatch to external QA platforms.

import (
	"context"
	"encoding/json"
	"log/slog"
	"net/http"
	"sync/atomic"
	"time"
)

type Metrics struct {
	TotalSubmits  atomic.Int64
	SuccessfulSubmits atomic.Int64
	TotalLatency  atomic.Int64 // nanoseconds
}

type WebhookPayload struct {
	InteractionID string `json:"interactionId"`
	WrapUpCode    string `json:"wrapupCode"`
	Notes         string `json:"notes"`
	SubmittedAt   string `json:"submittedAt"`
	Status        string `json:"status"`
}

type ManagedSubmitter struct {
	Inner       *WrapUpSubmitter
	Metrics     *Metrics
	AuditLogger *slog.Logger
	QAWebhookURL string
}

func (m *ManagedSubmitter) SubmitWithTracking(ctx context.Context, payload WrapUpPayload, interactionEndedAt time.Time) error {
	start := time.Now()
	m.Metrics.TotalSubmits.Add(1)

	err := m.Inner.Submit(ctx, payload, interactionEndedAt)
	latency := time.Since(start)
	m.Metrics.TotalLatency.Add(latency.Nanoseconds())

	if err != nil {
		m.AuditLogger.Error("wrap-up submission failed",
			"interactionId", payload.InteractionID,
			"code", payload.WrapUpCode,
			"latency", latency,
			"error", err)
		return err
	}

	m.Metrics.SuccessfulSubmits.Add(1)
	m.AuditLogger.Info("wrap-up submission successful",
		"interactionId", payload.InteractionID,
		"code", payload.WrapUpCode,
		"latency", latency)

	// Synchronize with external QA platform
	go m.dispatchQAWebhook(payload, latency)

	return nil
}

func (m *ManagedSubmitter) dispatchQAWebhook(payload WrapUpPayload, latency time.Duration) {
	webhook := WebhookPayload{
		InteractionID: payload.InteractionID,
		WrapUpCode:    payload.WrapUpCode,
		Notes:         payload.Notes,
		SubmittedAt:   time.Now().UTC().Format(time.RFC3339),
		Status:        "completed",
	}

	body, _ := json.Marshal(webhook)
	req, _ := http.NewRequest(http.MethodPost, m.QAWebhookURL, bytes.NewReader(body))
	req.Header.Set("Content-Type", "application/json")

	client := &http.Client{Timeout: 5 * time.Second}
	resp, err := client.Do(req)
	if err != nil || resp.StatusCode >= 400 {
		if resp != nil {
			defer resp.Body.Close()
		}
		slog.Warn("QA webhook delivery failed", "url", m.QAWebhookURL, "error", err)
		return
	}
	defer resp.Body.Close()
}

func (m *ManagedSubmitter) GetSuccessRate() float64 {
	total := m.Metrics.TotalSubmits.Load()
	if total == 0 {
		return 0.0
	}
	return float64(m.Metrics.SuccessfulSubmits.Load()) / float64(total) * 100.0
}

func (m *ManagedSubmitter) GetAvgLatency() time.Duration {
	total := m.Metrics.TotalSubmits.Load()
	if total == 0 {
		return 0
	}
	return time.Duration(m.Metrics.TotalLatency.Load() / total)
}

Webhook Synchronization: The QA webhook dispatch runs asynchronously to avoid blocking the main submission thread. Failure in webhook delivery does not invalidate the successful CXone API submission.
Metrics Tracking: sync/atomic counters track total submissions, successful submissions, and cumulative latency. Success rate and average latency are computed on-demand without locking.
Audit Logging: log/slog provides structured, machine-readable logs containing interaction ID, disposition code, latency, and error details for governance and compliance reviews.

Complete Working Example

The following module combines authentication, validation, submission, tracking, and webhook synchronization into a production-ready service.

package main

import (
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"io"
	"log/slog"
	"net/http"
	"net/url"
	"os"
	"regexp"
	"strings"
	"sync"
	"sync/atomic"
	"time"
)

// --- OAuth Token Structures ---
type TokenResponse struct {
	AccessToken string `json:"access_token"`
	ExpiresIn   int    `json:"expires_in"`
}

type OAuthConfig struct {
	BaseURL      string
	ClientID     string
	ClientSecret string
	Scope        string
}

type TokenCache struct {
	mu        sync.RWMutex
	token     string
	expiresAt time.Time
}

func NewTokenCache() *TokenCache { return &TokenCache{} }

func (c *TokenCache) Get() (string, bool) {
	c.mu.RLock()
	defer c.mu.RUnlock()
	return c.token, time.Now().Before(c.expiresAt)
}

func (c *TokenCache) Set(token string, ttl time.Duration) {
	c.mu.Lock()
	defer c.mu.Unlock()
	c.token = token
	c.expiresAt = time.Now().Add(ttl - 10*time.Second)
}

func FetchToken(ctx context.Context, cfg OAuthConfig) (string, error) {
	payload := url.Values{}
	payload.Set("grant_type", "client_credentials")
	payload.Set("client_id", cfg.ClientID)
	payload.Set("client_secret", cfg.ClientSecret)
	payload.Set("scope", cfg.Scope)

	req, err := http.NewRequestWithContext(ctx, http.MethodPost, cfg.BaseURL+"/oauth2/token", strings.NewReader(payload.Encode()))
	if err != nil {
		return "", fmt.Errorf("failed to create token request: %w", err)
	}
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")

	client := &http.Client{Timeout: 10 * time.Second}
	resp, err := client.Do(req)
	if err != nil {
		return "", fmt.Errorf("token request failed: %w", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		body, _ := io.ReadAll(resp.Body)
		return "", fmt.Errorf("oauth error %d: %s", resp.StatusCode, string(body))
	}

	var tr TokenResponse
	if err := json.NewDecoder(resp.Body).Decode(&tr); err != nil {
		return "", fmt.Errorf("failed to decode token response: %w", err)
	}
	return tr.AccessToken, nil
}

// --- Validation & Payload ---
type WrapUpPayload struct {
	InteractionID string `json:"interactionId"`
	WrapUpCode    string `json:"wrapupCode"`
	Notes         string `json:"notes,omitempty"`
	WrapUpDuration int   `json:"wrapupDuration,omitempty"`
}

type ValidationPipeline struct {
	MaxNoteLength int
	ValidCodes    map[string]bool
	UUIDRegex     *regexp.Regexp
}

func NewValidationPipeline() *ValidationPipeline {
	return &ValidationPipeline{
		MaxNoteLength: 4000,
		ValidCodes: map[string]bool{"0": true, "1": true, "2": true, "3": true, "4": true},
		UUIDRegex: regexp.MustCompile(`^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-5][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$`),
	}
}

func (p *ValidationPipeline) Validate(ctx context.Context, payload WrapUpPayload, interactionEndedAt time.Time) error {
	if payload.InteractionID == "" {
		return fmt.Errorf("validation failed: interactionId is required")
	}
	if payload.WrapUpCode == "" {
		return fmt.Errorf("validation failed: wrapupCode is required")
	}
	if !p.UUIDRegex.MatchString(payload.InteractionID) {
		return fmt.Errorf("validation failed: interactionId %s does not match UUID v4 format", payload.InteractionID)
	}
	if !p.ValidCodes[payload.WrapUpCode] {
		return fmt.Errorf("validation failed: wrapupCode %s is not in the approved disposition matrix", payload.WrapUpCode)
	}
	if len(payload.Notes) > p.MaxNoteLength {
		return fmt.Errorf("validation failed: notes exceed maximum length of %d characters", p.MaxNoteLength)
	}
	if !interactionEndedAt.IsZero() && time.Since(interactionEndedAt) > 24*time.Hour {
		return fmt.Errorf("validation failed: wrap-up submitted outside 24-hour window")
	}
	return nil
}

// --- Submitter Core ---
type WrapUpSubmitter struct {
	BaseURL    string
	TokenCache *TokenCache
	Validator  *ValidationPipeline
	Client     *http.Client
	OnSuccess  func(interactionID string, code string)
}

func (s *WrapUpSubmitter) Submit(ctx context.Context, payload WrapUpPayload, interactionEndedAt time.Time) error {
	if err := s.Validator.Validate(ctx, payload, interactionEndedAt); err != nil {
		return fmt.Errorf("pre-submission validation failed: %w", err)
	}

	body, err := json.Marshal(payload)
	if err != nil {
		return fmt.Errorf("failed to marshal payload: %w", err)
	}

	token, valid := s.TokenCache.Get()
	if !valid {
		return fmt.Errorf("authentication token expired")
	}

	endpoint := fmt.Sprintf("%s/api/v2/interactions/%s/wrapup", s.BaseURL, payload.InteractionID)
	req, err := http.NewRequestWithContext(ctx, http.MethodPost, endpoint, bytes.NewReader(body))
	if err != nil {
		return fmt.Errorf("failed to create request: %w", err)
	}
	req.Header.Set("Authorization", "Bearer "+token)
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Accept", "application/json")

	var resp *http.Response
	var respErr error
	for attempt := 0; attempt < 3; attempt++ {
		resp, respErr = s.Client.Do(req)
		if respErr != nil {
			return fmt.Errorf("request failed: %w", respErr)
		}
		if resp.StatusCode == http.StatusTooManyRequests {
			time.Sleep(time.Duration(attempt+1) * time.Second)
			continue
		}
		break
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK && resp.StatusCode != http.StatusNoContent {
		respBody, _ := io.ReadAll(resp.Body)
		return fmt.Errorf("submission failed with status %d: %s", resp.StatusCode, string(respBody))
	}

	if s.OnSuccess != nil {
		s.OnSuccess(payload.InteractionID, payload.WrapUpCode)
	}
	return nil
}

// --- Metrics & Webhook Manager ---
type Metrics struct {
	TotalSubmits  atomic.Int64
	SuccessfulSubmits atomic.Int64
	TotalLatency  atomic.Int64
}

type WebhookPayload struct {
	InteractionID string `json:"interactionId"`
	WrapUpCode    string `json:"wrapupCode"`
	Notes         string `json:"notes"`
	SubmittedAt   string `json:"submittedAt"`
	Status        string `json:"status"`
}

type ManagedSubmitter struct {
	Inner        *WrapUpSubmitter
	Metrics      *Metrics
	AuditLogger  *slog.Logger
	QAWebhookURL string
}

func (m *ManagedSubmitter) SubmitWithTracking(ctx context.Context, payload WrapUpPayload, interactionEndedAt time.Time) error {
	start := time.Now()
	m.Metrics.TotalSubmits.Add(1)

	err := m.Inner.Submit(ctx, payload, interactionEndedAt)
	latency := time.Since(start)
	m.Metrics.TotalLatency.Add(latency.Nanoseconds())

	if err != nil {
		m.AuditLogger.Error("wrap-up submission failed",
			"interactionId", payload.InteractionID, "code", payload.WrapUpCode, "latency", latency, "error", err)
		return err
	}

	m.Metrics.SuccessfulSubmits.Add(1)
	m.AuditLogger.Info("wrap-up submission successful",
		"interactionId", payload.InteractionID, "code", payload.WrapUpCode, "latency", latency)

	go m.dispatchQAWebhook(payload, latency)
	return nil
}

func (m *ManagedSubmitter) dispatchQAWebhook(payload WrapUpPayload, latency time.Duration) {
	webhook := WebhookPayload{
		InteractionID: payload.InteractionID,
		WrapUpCode:    payload.WrapUpCode,
		Notes:         payload.Notes,
		SubmittedAt:   time.Now().UTC().Format(time.RFC3339),
		Status:        "completed",
	}

	body, _ := json.Marshal(webhook)
	req, _ := http.NewRequest(http.MethodPost, m.QAWebhookURL, bytes.NewReader(body))
	req.Header.Set("Content-Type", "application/json")

	client := &http.Client{Timeout: 5 * time.Second}
	resp, err := client.Do(req)
	if err != nil || resp.StatusCode >= 400 {
		if resp != nil {
			defer resp.Body.Close()
		}
		slog.Warn("QA webhook delivery failed", "url", m.QAWebhookURL, "error", err)
		return
	}
	defer resp.Body.Close()
}

func (m *ManagedSubmitter) GetSuccessRate() float64 {
	total := m.Metrics.TotalSubmits.Load()
	if total == 0 {
		return 0.0
	}
	return float64(m.Metrics.SuccessfulSubmits.Load()) / float64(total) * 100.0
}

func (m *ManagedSubmitter) GetAvgLatency() time.Duration {
	total := m.Metrics.TotalSubmits.Load()
	if total == 0 {
		return 0
	}
	return time.Duration(m.Metrics.TotalLatency.Load() / total)
}

func main() {
	// Initialize logger
	logger := slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{Level: slog.LevelInfo}))

	// OAuth configuration
	oauthCfg := OAuthConfig{
		BaseURL:      "https://platform.devtest.nice.incontact.com",
		ClientID:     os.Getenv("CXONE_CLIENT_ID"),
		ClientSecret: os.Getenv("CXONE_CLIENT_SECRET"),
		Scope:        "interactions:write",
	}

	cache := NewTokenCache()
	token, err := FetchToken(context.Background(), oauthCfg)
	if err != nil {
		logger.Error("failed to fetch token", "error", err)
		os.Exit(1)
	}
	cache.Set(token, time.Duration(oauthCfg.ExpiresIn)*time.Second)

	// Initialize submitter
	submitter := &WrapUpSubmitter{
		BaseURL:    oauthCfg.BaseURL,
		TokenCache: cache,
		Validator:  NewValidationPipeline(),
		Client:     &http.Client{Timeout: 15 * time.Second},
		OnSuccess: func(id, code string) {
			logger.Info("state transition triggered", "interactionId", id, "newCode", code)
		},
	}

	managed := &ManagedSubmitter{
		Inner:        submitter,
		Metrics:      &Metrics{},
		AuditLogger:  logger,
		QAWebhookURL: "https://qa-platform.example.com/api/v1/wrapup-sync",
	}

	// Example submission
	payload := WrapUpPayload{
		InteractionID:  "550e8400-e29b-41d4-a716-446655440000",
		WrapUpCode:     "3",
		Notes:          "Customer confirmed purchase and requested invoice via email.",
		WrapUpDuration: 45,
	}

	err = managed.SubmitWithTracking(context.Background(), payload, time.Now().Add(-2*time.Minute))
	if err != nil {
		logger.Error("submission failed", "error", err)
		return
	}

	logger.Info("metrics summary",
		"successRate", managed.GetSuccessRate(),
		"avgLatency", managed.GetAvgLatency())
}

Common Errors & Debugging

Error: 400 Bad Request

• Cause: The CXone engine rejects payloads with invalid disposition codes, malformed UUIDs, or notes exceeding platform limits.
• Fix: Verify the wrapupCode matches your configured disposition matrix. Ensure interactionId follows UUID v4 format. Truncate notes to 4000 characters before submission.
• Code Fix: The ValidationPipeline.Validate method enforces these constraints before network transmission.

Error: 401 Unauthorized

• Cause: The Bearer token has expired or lacks the interactions:write scope.
• Fix: Implement token refresh logic before expiration. Verify the OAuth client scope configuration in the CXone admin portal.
• Code Fix: The TokenCache structure tracks expiration and subtracts 10 seconds to prevent edge-case authentication failures.

Error: 409 Conflict

• Cause: The interaction has already been wrapped up or is in a terminal state.
• Fix: Check interaction status before submission. Idempotent submission is not supported for wrap-up endpoints.
• Code Fix: Implement a pre-check call to GET /api/v2/interactions/{interactionId} to verify wrapupStatus before invoking the POST endpoint.

Error: 429 Too Many Requests

• Cause: CXone rate limits wrap-up submissions per agent or per API client.
• Fix: Implement exponential backoff. The Submit method includes a retry loop with increasing delays for 429 responses.
• Code Fix: The retry loop respects the original request body to maintain idempotency and avoids cascading failures during high-volume wrap-up cycles.

Official References

• CXone Interactions API Documentation
• CXone OAuth 2.0 Authentication Guide
• CXone Agenting & Wrap-Up Constraints