WhatsApp error 135000: unknown error with request parameters
Error 135000 means a message failed to send because of an unknown error with the request parameters. Meta's description is "Message failed to send because of an unknown error with your request parameters." Meta's guidance is to check the endpoint's reference for correct syntax, and to contact customer support if the error keeps coming back.
Meta's code for an unknown error with the request parameters.
Meta's separate code for a message that failed to send due to an unknown error.
Trace ID Meta says to include when contacting support, to help debug the error.
What does WhatsApp error 135000 mean?
It means the platform could not send the message, could not say exactly why, and still placed the problem in your request parameters.
Meta's reference gives 135000 the details text "Message failed to send because of an unknown error with your request parameters." The remedy is to see the endpoint's reference to determine whether you are calling it with the correct syntax, and to contact customer support if you keep receiving the code.
That makes it different from 131000, which Meta describes as an unknown error without pointing at the parameters, and whose remedy starts with trying again.
How do you find the bad parameter?
Compare the exact request body you sent with the endpoint reference, field by field.
Log the full payload alongside the error, since the value that caused it is often one that varies per message: a phone number in an unexpected format, an empty string where text was expected, or a nested object with a field in the wrong place. Then read the details value in error_data, which Meta describes as the most likely reason for the error.
If a payload that failed with 135000 succeeds after a change, keep both versions. The difference is the answer, and it tells you what to validate before sending next time.
When should you contact Meta support about error 135000?
When the request matches the reference and the code keeps returning.
Meta names support as the next step for a persistent 135000. Include the fbtrace_id from the error response, which Meta says may help debug the error, along with the timestamp, the endpoint and the request body with credentials removed.
Before opening a ticket, check that the same request fails consistently. A request that fails once and succeeds unchanged a minute later points at the platform rather than the parameters, and Meta's status page for the WhatsApp Business Platform is the quicker place to confirm that.
Common mistakes
- Retrying the identical request repeatedly. Meta places the problem in the parameters, so the same payload tends to fail the same way.
- Logging only the error. Without the request body, the parameter at fault cannot be found.
- Contacting support without the fbtrace_id. Meta names it as the ID that helps debug the error.
EasyCoexistence shows the phone number ID and connection status for each number on the dashboard, so the identifiers in a request can be checked against what Meta holds.
Frequently asked questions
Is error 135000 the same as 131000?
No. 131000 is an unknown error with no cause given. 135000 is an unknown error that Meta attributes to your request parameters.
Is error 135000 the same as error 100?
No. Error 100 names unsupported or misspelled parameters. 135000 says the parameters caused an error Meta cannot identify.
Should I retry after 135000?
Not unchanged. Check the request against the endpoint reference first.
What do I send to Meta support?
The fbtrace_id from the response, the endpoint, the time and the request body without credentials.
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