How To Fix MC845 - Object is assigned to entity & in the data model

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 845

• Message text: Object is assigned to entity & in the data model

What causes this issue?

An entity with a specialization relationship is assigned to the table
or view in the data model.
The subsequent log lines list the objects which are assigned to the
entities of the specialization.

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?

If you made changes to the view or table which are to be transferred
from the specialization, change the views for specialization
accordingly in the ABAP/4 Dictionary.
View maintenance provides a special function for transferring the
fields, base tables and selection conditions from the generalization.
Tables usually make no sense as a specialization.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC845 - Object is assigned to entity & in the data model ?

  The SAP error message MC845, which states "Object is assigned to entity & in the data model," typically occurs in the context of SAP's data modeling and master data management, particularly when dealing with the Material Management (MM) or Production Planning (PP) modules. This error indicates that the object you are trying to modify or delete is currently assigned to a specific entity in the data model, which prevents the action from being completed.
  Cause:
  
  Object Assignment: The object (such as a material, vendor, or customer) is linked to a specific entity in the data model, which means it is being used in some configuration or transaction.
  Data Integrity: SAP enforces data integrity rules to ensure that objects that are in use cannot be deleted or modified without first removing their associations.
  Dependencies: There may be dependencies or relationships with other objects that need to be resolved before the object can be modified or deleted.
  
  Solution:
  
  Identify the Entity: Determine which entity the object is assigned to. This can often be done by checking the object’s details in the relevant transaction or using transaction codes like SE11 (Data Dictionary) or SE80 (Object Navigator).
  Remove Assignments: If you need to delete or modify the object, you will first need to remove its assignments. This may involve:
  
  Deleting or changing the configuration that uses the object.
  Unassigning the object from any related entities or transactions.
  
  
  Check Dependencies: Use transaction codes like SE11 or SE80 to check for any dependencies or relationships that might be preventing the action. You may need to resolve these dependencies first.
  Consult Documentation: Review SAP documentation or help resources for specific guidance on the object type you are dealing with, as the steps may vary based on the object and its context.
  Use Transaction Codes: Depending on the object type, you may need to use specific transaction codes to manage the object (e.g., MM02 for material master, XK02 for vendor master).
  Seek Help from SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support or your internal SAP team for assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that pertain to the object you are working with.
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message MC845.
  Data Model Understanding: A good understanding of the data model and how different entities interact within SAP can help in troubleshooting similar issues in the future.
  Testing in a Sandbox: If possible, replicate the issue in a sandbox environment to test potential solutions without affecting production data.
  
  By following these steps, you should be able to identify the cause of the MC845 error and take appropriate action to resolve it.