How To Fix MDG_OITC_CUST003 - Leading key is already set for object identifier type &1

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_OITC_CUST - MDG. Object Identifier Type Code messages

• Message number: 003

• Message text: Leading key is already set for object identifier type &1

What causes this issue?

You have selected the <LS>Leading Key</> checkbox for the <LS>Object
Identifier Type</> &V2&. This is not possible because <LS>Object
Identifier Type </>&V1& , which belongs to <LS>Object NodeType</> &V3&,
is still marked as leading key.

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?

Deselect the <LS>Leading Key</> checkbox<LS> </>for <LS>Object
Identifier Type</> &V2&.
Deselect the <LS>Leading Key</> checkbox for <LS>Object Identifier Type
</> &V1&.
Select the <LS>Leading Key</> checkbox for <LS>Object Identifier Type</>
&V2&

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MDG_OITC_CUST003 - Leading key is already set for object identifier type &1 ?

  The SAP error message MDG_OITC_CUST003 indicates that there is an issue with the object identifier type in the Master Data Governance (MDG) system. Specifically, the error message states that the "leading key is already set for object identifier type &1." This typically occurs when there is an attempt to set or modify an object identifier type that already has a leading key defined.
  Cause:
  
  Duplicate Leading Key Assignment: The error usually arises when you try to assign a leading key to an object identifier type that already has one assigned. In MDG, each object identifier type can only have one leading key.
  Configuration Issues: There may be a misconfiguration in the MDG settings or in the object identifier type definitions.
  Data Consistency Issues: If there are inconsistencies in the data or if the system is trying to process an object that has already been defined with a leading key, this error can occur.
  
  Solution:
  
  
  Check Object Identifier Type Configuration:
  
  Go to the MDG configuration settings and check the object identifier type that is causing the error (indicated by &1 in the error message).
  Ensure that the leading key is set correctly and that no other leading key is assigned to the same object identifier type.
  
  
  
  Review Existing Assignments:
  
  Review the existing assignments of leading keys to object identifier types. If a leading key is already assigned, you may need to remove it before assigning a new one.
  
  
  
  Data Validation:
  
  Validate the data being processed to ensure that it does not conflict with existing configurations. Check for any duplicate entries or inconsistencies.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for MDG to understand the specific requirements and limitations regarding object identifier types and leading keys.
  
  
  
  Seek Help from SAP Support:
  
  If the issue persists after checking the configuration and data, consider reaching out to SAP support for further assistance. They may provide insights specific to your system configuration.
  
  
  
  Related Information:
  
  MDG Configuration: Familiarize yourself with the MDG configuration settings, especially those related to object identifiers and keys.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.