400 Bad Request on PUT /api/v2/webmessaging/deployments with custom theme JSON

NICE CXone API & Integrations
1

What’s the best way to structure the theme object for launcher customization?

I am hitting a 400 Bad Request when updating a deployment via PUT /api/v2/webmessaging/deployments/{id}. The payload includes the theme configuration but the API rejects it with invalid_theme_structure. My JSON payload is:

{
 "theme": {
 "launcher": {
 "position": "bottom-right",
 "colors": {
 "primary": "#0056b3",
 "text": "#ffffff"
 }
 },
 "window": {
 "colors": {
 "header": "#0056b3",
 "background": "#f8f9fa"
 }
 }
 }
}

The documentation for the Web Messaging Deployment API is vague on the exact schema for nested color objects. I have verified the OAuth token has webmessaging:deployment:write scope and the deployment ID is valid. Newman reports the error immediately after the request. Is the colors object expected to be flat or nested under specific keys like primary or secondary?

2

The problem is that the launcher object requires a shape property. Omitting it triggers invalid_theme_structure. Add "shape": "circle" to your colors block. See https://support.nicecxone.com/articles/dfo-theme-schema for the full spec.

3

The shape property is mandatory for the launcher configuration, as noted above. However, relying solely on that fix might not resolve all validation errors if other nested objects are also incomplete. The Web Messaging theme schema is strict about required fields in launcher, window, and bubble sections.

Here is a fully validated JSON structure for the theme object that avoids the invalid_theme_structure error:

{
 "theme": {
 "launcher": {
 "position": "bottom-right",
 "shape": "circle",
 "colors": {
 "primary": "#0056b3",
 "text": "#ffffff"
 }
 },
 "window": {
 "colors": {
 "primary": "#0056b3",
 "text": "#333333"
 }
 }
 }
}

Ensure you also validate the window colors. The API often fails silently on partial theme updates if the schema isn’t fully compliant. Use the PureCloudPlatformClientV2 SDK to serialize this correctly instead of raw JSON to avoid syntax issues.

4

My usual workaround is to validating the full schema locally before hitting the API, because the 400 error often masks missing required fields in the window or bubble sections.

  • theme schema validation
  • PUT /api/v2/webmessaging/deployments
  • custom theme JSON structure