Cloud API Error 135000 – WhatsApp Cloud / Coexistence

What it is

Error 135000 is a generic error from the WhatsApp Cloud API / Coexistence, without clear technical details from Meta.

Most common (observed) cause

• Internal inconsistency in templates

• Possible invalid or corrupted state of existing templates

Practical solution found by the community

Delete ALL templates from the WABA (WhatsApp Business Account)
Create them again from scratch
Wait for Meta’s approval
Test sending again

The expected result is that sending works correctly, but we’re not responsible if it doesn’t work for you.

After recreating the templates, the error is usually resolved and the API goes back to working normally.

Note

Solution based on recurring behavior in production, not officially documented by Meta.