How To Fix FMCA_INCORR046 - Creation not possible as master data not unique

FMCA_INCORR046 - Overview

• Message type: E = Error

• Message class: FMCA_INCORR - Messages for Inbound Correspondence

• Message number: 046

• Message text: Creation not possible as master data not unique

What causes this issue?

You want to create inbound correspondence requests in the inbound
correspondence history. You have not entered a unique record of master
data to call the transaction. Because of this it is not possible to
create requests.

System Response

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

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

FMCA_INCORR046 - Details

• The SAP error message FMCA_INCORR046 indicates that the system is unable to create a record because the master data is not unique. This typically occurs in the context of Financial Management (FM) or Controlling (CO) modules where certain master data records must be unique to ensure data integrity and proper processing.
  
  Cause:
  The error is usually caused by one of the following reasons:
  
  
  Duplicate Entries: There are existing records in the system that have the same key fields as the new record you are trying to create. This could be due to:
  
  Duplicate master data entries (e.g., cost centers, internal orders, etc.).
  Incorrect data entry or configuration that allows for non-unique records.
  
  
  
  
  Configuration Issues: The system may be configured to require unique identifiers for certain types of master data, and the new entry violates this rule.
  
  
  Data Migration Issues: If data was migrated from another system, it may have introduced duplicates that were not present in the