How To Fix MDG_OTC_CUST003 - No main object type is assigned to object type &1

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_OTC_CUST - MDG: Object Type Code Maintenance messages

• Message number: 003

• Message text: No main object type is assigned to object type &1

What causes this issue?

You have defined object type &V1& as a projection object type. A main
object type must be assigned to object type &V1&.

System Response

Data will not be saved.

How to fix this error?

Assign a main object type to object type &V1&

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MDG_OTC_CUST003 - No main object type is assigned to object type &1 ?

  The SAP error message MDG_OTC_CUST003 indicates that there is no main object type assigned to the specified object type in the Master Data Governance (MDG) system. This error typically arises when configuring or using the MDG framework, particularly in the context of object types and their relationships.
  Cause:
  
  Configuration Issue: The object type specified in the error message does not have a main object type assigned in the MDG configuration. This can happen if the object type was created but not properly configured.
  Missing Customization: If the object type is a custom one, it may not have been fully set up in the system, leading to this error.
  Transport Issues: If the configuration was transported from another system, it might not have included all necessary settings.
  
  Solution:
  
  
  Check Object Type Configuration:
  
  Go to the MDG customizing transaction (usually SPRO).
  Navigate to the relevant section for object type configuration.
  Ensure that the object type in question has a main object type assigned. This can typically be found under the settings for the specific object type.
  
  
  
  Assign Main Object Type:
  
  If the main object type is not assigned, you will need to assign it. This usually involves selecting the object type and specifying the main object type in the configuration settings.
  
  
  
  Review Transport Requests:
  
  If the issue arose after a transport, check the transport request to ensure that all necessary configurations were included.
  If something is missing, you may need to manually adjust the configuration in the target system.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to MDG configuration for specific guidance on setting up object types and their relationships.
  
  
  
  Testing:
  
  After making the necessary changes, test the configuration to ensure that the error no longer occurs.
  
  
  
  Related Information:
  
  MDG Configuration: Familiarize yourself with the MDG configuration guide, which provides detailed steps on how to set up object types and their relationships.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Community Forums: Consider searching or posting in SAP community forums for insights from other users who may have encountered the same issue.
  
  By following these steps, you should be able to resolve the MDG_OTC_CUST003 error and ensure that your object types are correctly configured in the MDG system.