19029: When updating a channel at least one field should be updated

This error occurs when your channel update request does not include any channel data to change. When you update a channel, include at least one supported field in the request.

• The request body did not include any channel updates.
• The request did not include a supported updatable field. Update only type, description, or is_primary.
• The request attempted to change the channel value itself, which cannot be updated.

• Send at least one supported field in the update request. Use type, description, or is_primary.
• If you update type, use a supported channel value: email, sms, voice, messenger, or whatsapp.
• If you update description, keep the value under 100 characters.
• If you set is_primary to true, make sure only one channel is marked as primary.
• If you need to change the channel value itself, remove it from the update request. Delete the existing channel and create a new one with the new value.

• Contact API
• Compliance Toolkit for Programmable Messaging
• Consent Management API