90037: Broadcast has too many 'CorrelationId' items

This error occurs when your Broadcast request includes more CorrelationId values than the API accepts.

• Your request includes too many CorrelationId items.
• Your application adds duplicate or repeated CorrelationId values to the same Broadcast request.
• Your request-building logic appends CorrelationId values in a loop and exceeds the allowed request limit.

• Reduce the number of CorrelationId values you send in a single Broadcast request.
• Remove duplicate CorrelationId entries before you submit the request.
• Split large Broadcast operations into multiple requests so each request stays within the accepted limit.
• Review the code that builds your Broadcast payload and make sure it only adds the CorrelationId values you intend to send.
• If you are building a new notifications workflow, use Programmable Messaging for SMS notifications. For push notifications, integrate directly with APNs or FCM. Notify is deprecated.

• Notify overview
• Notification Resource
• Notify limits