ABHA biometric authentication errors
Codes any exchange call can meet are recorded once, in the Other specification: the gateway's NHCX- codes, the standard payer codes, and the reference payer's structure and transport codes. The reference payer's other codes sit with the exchange they reject: coverage eligibility, preauthorisation, claim and insurance plan. Reading error codes explains the code spaces.
The ABHA biometric authentication specification records no error code yet. That is a gap in the specification, not a promise that this module cannot fail.
Every code above is recorded in the specification that owns it. The aggregated list across modules is at error codes.