SIGNIN_CREDENTIALS_REJECTED

Cause

The email/password pair presented to the portal sign-in endpoint was not accepted. The response deliberately does not say which half was wrong: this endpoint is unauthenticated, so distinguishing "no such account" from "wrong password" would let anyone use it to discover which addresses are registered.

How to fix it

Re-enter the email and password. If the account exists but has never confirmed its signup code you will get USER_NOT_CONFIRMED instead; if the password is genuinely lost, start the reset flow.

Example response

{
  "error_code": "SIGNIN_CREDENTIALS_REJECTED",
  "error_type": "auth",
  "error_message": "Sign-in was refused.",
  "hint": "Re-enter the email and password. If the account exists but has never confirmed its signup code you will get USER_NOT_CONFIRMED instead; if the password is genuinely lost, start the reset flow.",
  "docs_url": "https://docs.billerapi.com/errors/SIGNIN_CREDENTIALS_REJECTED",
  "request_id": "d94f5e2a-8c3b-4f1e-9a7d-6b2c1e0f8a34"
}

Related

• Error handling — the error envelope shape and how to parse it
• Error code reference — every stable error code