How To Fix PPEENG145 - &1 between &2 and &3 cannot be deleted because of cardinality to &3

PPEENG145 - Overview

• Message type: E = Error

• Message class: PPEENG - iPPE Engine Messages

• Message number: 145

• Message text: &1 between &2 and &3 cannot be deleted because of cardinality to &3

What causes this issue?

You have tried to delete a relationship of type &v1& between the
objects &v2& and &v3&. The Customizing for relationship type &v1&
prescribes a minimum number of relationships of type &v1& at object
&v3&. If you delete this relationship, this minimum requirement would
not be met.

System Response

The system does not allow you to delete the relationship of type &v1&
between &v2& and &v3&.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

PPEENG145 - Details

• The SAP error message PPEENG145 indicates that there is an issue with the cardinality of relationships between objects in the context of SAP's Production Planning and Execution (PPE) module. Specifically, this error occurs when you attempt to delete an object (like a production order, project, or similar entity) that is still linked to other objects, which prevents its deletion due to existing dependencies.
  
  Cause:
  The error message PPEENG145 typically arises from the following scenarios:
  
  Existing Dependencies: The object you are trying to delete has existing relationships or dependencies with other objects. For example, if you are trying to delete a production order that has associated components, operations, or other linked entities, the system will prevent this action.
  Cardinality Constraints: The cardinality rules define how many instances of one entity can be associated with another. If the object you are trying to delete is required by another object (e.g., a component is required for a