I normally fix this by isolating the payload validation logic within the ServiceNow integration layer before the data even reaches Genesys. The WFM API is strict about schema compliance, and mixing profile preferences with adherence rules often triggers immediate rejection. While the previous suggestions correctly identify the invalid field, the underlying issue is often a misconfigured Data Action mapping that pulls user profile attributes into the schedule event payload.
Ensure the webhook or Data Action transformation explicitly filters out shift_swap_approval. Here is the corrected payload structure that bypasses the 400 error:
Cross-referencing the WFM schema documentation confirms that only timezone and adherence_rules are permitted in this specific endpoint. Removing the approval setting resolves the validation failure.