HTTP 400 · Bad Request
HTTP 400 Messages

When & why it happens

editMessage was called with the exact same text/markup the message already has — server refuses to no-op edit.

Handling in gogram

Surfaced as *gogram.ErrResponseCode. Match on the message:

if err, ok := err.(*gogram.ErrResponseCode); ok { if err.Message == "MESSAGE_NOT_MODIFIED" { // handle this error } }