How To Fix MDG_OTC_CUST001 - Main object type &1 must not be a projection object type

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 001

• Message text: Main object type &1 must not be a projection object type

What causes this issue?

You have assigned main object type &V1& to the projection object type
&V2&. This is not allowed because &V2& is a projection object.

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

System Response

The system cannot save data changes.

How to fix this error?

Choose a main object type that is not a projection object.

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_OTC_CUST001 - Main object type &1 must not be a projection object type ?

  The SAP error message MDG_OTC_CUST001 indicates that the main object type specified in your operation is a projection object type, which is not allowed in the context of the operation you are trying to perform. This error typically arises in the context of Master Data Governance (MDG) when working with object types that are not fully defined or are intended for specific use cases.
  Cause:
  
  Projection Object Type: The main object type you are trying to use is a projection object. Projection objects are typically used for specific views or representations of data and are not meant to be used as main objects in certain operations.
  Incorrect Configuration: The configuration of the object types in your MDG setup may not be correctly defined, leading to the use of a projection object where a base object is expected.
  Data Model Issues: There may be issues with the data model configuration, where the object types are not properly set up to distinguish between base and projection objects.
  
  Solution:
  
  Check Object Type: Verify the object type you are using. Ensure that it is a base object type and not a projection object type. You can do this by checking the configuration in the MDG data model.
  Adjust Configuration: If you find that the object type is incorrectly configured, you may need to adjust the configuration in the MDG data model to ensure that only base object types are used where required.
  Use Correct Object Type: If you need to perform an operation that requires a main object type, switch to a valid base object type that is appropriate for the operation you are trying to execute.
  Consult Documentation: Refer to the SAP documentation for MDG to understand the distinctions between object types and the specific requirements for the operation you are attempting.
  
  Related Information:
  
  MDG Data Model: Familiarize yourself with the MDG data model and the definitions of object types within it. Understanding the hierarchy and relationships between different object types can help prevent this error.
  SAP Notes: Check for any relevant SAP Notes or updates that may address this issue or provide additional guidance on configuring object types in MDG.
  SAP Community: Engage with the SAP Community forums or support channels for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the error and proceed with your operations in SAP MDG.