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Hi everyone,
I’m having a blocking issue with Omnichannel for Customer Service + Facebook Messenger.
Facebook is fully connected to Omnichannel:
Meta App and Page created
Webhooks validated
Page Access Token configured
Channel created in Omnichannel
Conversations are routed correctly to agents in Customer Service Workspace
Inbound works perfectly:
Messages sent from Facebook arrive in Omnichannel and are assigned to agents.
Outbound always fails:
When an agent tries to reply from Customer Service Workspace, the message fails with:
"The message could not be sent due to an error. Please try again later.
Error code: 500, Reason: Internal Server Error"
Agents cannot send any message back to the Facebook user.
Meta App is in Live mode
pages_messaging permission is granted (Standard Access)
Page Access Token regenerated and reconfigured
Correct roles and permissions on the Facebook Page
Tested with different Facebook users
Tried with a completely new App and a new Page
Same result every time:
Facebook → Omnichannel works, Omnichannel → Facebook fails with 500.
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