HTTP 400 · Bad Request
HTTP 400 Server / Internal

When & why it happens

The worker busy exceeds the maximum length the server accepts. Shorten it.

Handling in gogram

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

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