HTTP 400 · Bad Request
HTTP 400 Permissions / Forbidden

When & why it happens

The action requires chat-admin rights and the calling user does not have them.

Handling in gogram

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

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