How To Fix /SAPAPO/MC01155 - Identifier for mapping changed from '&1' to '&2'

/SAPAPO/MC01155 - Overview

• Message type: E = Error

• Message class: /SAPAPO/MC01 -

• Message number: 155

• Message text: Identifier for mapping changed from '&1' to '&2'

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/MC01155 - Identifier for mapping changed from '&1' to '&2' ?

  The SAP error message /SAPAPO/MC01155 indicates that there has been a change in the identifier used for mapping in the Advanced Planning and Optimization (APO) module. This typically occurs when there is a mismatch or inconsistency in the mapping identifiers between different systems or within the same system after a change has been made.
  
  Cause:
  
  Change in Master Data: The identifier for mapping may have been changed in the master data, such as a change in the material number, location, or other key attributes.
  Data Migration or Upload: If data was migrated or uploaded into the system, it may have introduced inconsistencies in the identifiers.
  Configuration Changes: Changes in configuration settings related to the mapping of data can lead to this error.
  Transport Issues: If changes were transported from one system to another (e.g., from development to production), there may be discrepancies in the identifiers.
  
  
  Solution:
  
  Check Master Data: Verify the master data for the relevant objects