How To Fix PPEENG144 - &1 between &2 and &3 cannot be deleted because of cardinality to &2

PPEENG144 - Overview

• Message type: E = Error

• Message class: PPEENG - iPPE Engine Messages

• Message number: 144

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

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
&v2&. If you delete the relationship, the 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.

PPEENG144 - Details

• The SAP error message PPEENG144 indicates that there is an issue with deleting a specific object or record due to cardinality constraints in the system. This typically occurs in the context of SAP's Production Planning and Detailed Scheduling (PP/DS) or similar modules where relationships between objects (like orders, resources, or materials) are defined.
  
  Cause:
  The error message PPEENG144 occurs when you attempt to delete an object (e.g., a production order, a resource, or a planning object) that is still linked to other objects in a way that violates the cardinality rules. Cardinality refers to the relationship between two entities, such as one-to-one, one-to-many, or many-to-many. In this case, the object you are trying to delete is still referenced by another object, which prevents its deletion.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify Dependencies: Check the dependencies of the object you are trying to delete. You can do this by reviewing the