How To Fix CL551 - Assignment & & cannot be deleted

CL551 - Overview

• Message type: E = Error

• Message class: CL - Classification

• Message number: 551

• Message text: Assignment & & cannot be deleted

What causes this issue?

The following causes may apply:
Material &V1& is a component in a BOM. In the item data of this BOM
component, you have entered the class type which is used to classify the
material.
You can enter the class type of a BOM component if you want to use the
classification data of a material as a selection condition in
<DS:GLOS.variant_configuration>variant configuration</>.
Material &V1& is a batch material and is classified in a batch class
type. Either there are still related batches that are classified, or the
material has a product unit of measure (material master).

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?

You cannot delete the classification data:
If you want to use the classification data of the material to select BOM
components
If the material still has batches that are classified.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CL551 - Assignment & & cannot be deleted ?

  The SAP error message CL551, which states "Assignment & & cannot be deleted," typically occurs in the context of Class Management in SAP. This error indicates that there is an issue with trying to delete an assignment of a class or an object that is still being referenced or is in use.
  Causes:
  
  Active References: The class or object you are trying to delete has active references in other objects, such as characteristics, objects, or subclasses.
  Dependencies: There may be dependencies that prevent the deletion of the assignment. For example, if the class is being used in a material master or in a BOM (Bill of Materials), it cannot be deleted.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to delete the assignment.
  System Lock: The object might be locked by another user or process, preventing deletion.
  
  Solutions:
  
  Check References: Use transaction codes like CL02 (Change Class) or CL03 (Display Class) to check if