1
WhatsApp error 1 Invalid request or a WhatsApp server error
Transient — may succeed on retry
LetsBot-side
Sending and connection errors
Short answer
WhatsApp reported either an invalid request or a possible server error, so the message was not sent. Meta's status page shows whether there is a service outage; if there is none, the request itself has to be reviewed.
Checked against Meta docs on
2026-08-24
Official source
- Sara Delivered
- Karl Failed 1Invalid request or a WhatsApp server error
How to fix it
- Check the WhatsApp Business Platform status page to see whether the service is having an outage.
- If there is an outage, send the message again after the service recovers.
- If there is no outage, contact support — the request itself needs to be reviewed.
Meta's official wording for this code
Description
Invalid request or possible server error.
Meta's suggested solution
Check the WhatsApp Business Platform Status page to see API status information. If there are no server outages, check the endpoint reference and verify that your request is formatted correctly and meets all endpoint requirements.
Other codes in the same category
Common questions about this code
What does WhatsApp error 1 mean?
WhatsApp reported either an invalid request or a possible server error, so the message was not sent. Meta's status page shows whether there is a service outage; if there is none, the request itself has to be reviewed.
Can I just send the message again?
Yes. This error is transient, and the send may succeed on a retry with no changes.
Is this a problem with my account?
This is on the LetsBot side — contact us and we will handle it.
Still hitting this error?
Send us the code and a screenshot and we will read it with you. With LetsBot, the reason each message failed appears next to it in the campaign report instead of a bare number.