How To Fix CM_SUB_DATA019 - Value assignment type &1 allows one instance; inst. exists in the future

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_SUB_DATA - Substance Data (Header, ID, Reference, Materials)

• Message number: 019

• Message text: Value assignment type &1 allows one instance; inst. exists in the future

What causes this issue?

In Customizing, it is defined that the value assignment type &v1& can
only have one instance. No valid instance exists for the key date, but
there is one in the future.

System Response

The value assignment type cannot be displayed.

How to fix this error?

If you need to create a data record, first delete the records with the
validity in the future.

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 CM_SUB_DATA019 - Value assignment type &1 allows one instance; inst. exists in the future ?

  The SAP error message CM_SUB_DATA019 indicates that there is an issue with a value assignment type that allows only one instance, but there is already an existing instance that is set to a future date. This typically occurs in the context of configuration management or master data management, where certain value assignments are restricted to a single instance for a given time period.
  
  Cause:
  
  Single Instance Limitation: The value assignment type is designed to allow only one active instance at a time. If there is already an instance defined for a future date, the system prevents the creation of a new instance.
  Future Date Assignment: The existing instance is set to start in the future, which means it is still considered valid and active, thus blocking any new assignments for the same value assignment type.
  
  
  Solution:
  
  Check Existing Instances: Review the existing instances for the value assignment type in question. You can do this by