How To Fix BRF412 - You are not permitted to output multiple identical messages

BRF412 - Overview

• Message type: E = Error

• Message class: BRF - Messages for Business Rule Framework

• Message number: 412

• Message text: You are not permitted to output multiple identical messages

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

You tried to output two identical messages.
Two messages are regarded as being identical if the message number and
the message class match. For example, messages E122(BRF) and W122(BRF)
in the sense of the action <ZK>Output Message</> (0MS001) are identical.

How to fix this error?

Choose one of the two messages.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

BRF412 - Details

• The SAP error message BRF412 ("You are not permitted to output multiple identical messages") typically occurs in the context of Business Rule Framework (BRF) applications when there is an attempt to output the same message multiple times during the execution of a rule or decision table. This is a safeguard to prevent redundancy in user notifications or logs.
  
  Cause:
  
  Duplicate Message Output: The primary cause of this error is that the BRF logic is trying to output the same message more than once in a single execution context. This can happen if the rules are designed in such a way that they trigger the same message under certain conditions multiple times.
  Rule Configuration: The configuration of the rules or decision tables may not be set up correctly, leading to the same message being evaluated and triggered multiple times.
  Looping Logic: There may be a loop or recursive logic in the rules that inadvertently causes