An authorisation, completion or cancellation message. Read field by field.
This free tool decodes messages from the nexo Acquirer protocol (public nexo Standards specification, Card Payment Message Usage Guide v6.0): authorisation requests/responses, completion advice, cancellation advice. It only shows standard protocol fields and standard embedded EMV tags (ICCRelatedData), no proprietary field, no internal log format.
Ctrl+Enter to decode directly from the input field.
Examples (taken from the public nexo spec, lifecycle of a single transaction):
Example (the 4 messages of the same transaction, request → response → completion → cancellation):