How To Fix HRHCP00_CUSTOMIZING021 - In the customer namespace the interface group "M" is not permissible

HRHCP00_CUSTOMIZING021 - Overview

• Message type: E = Error

• Message class: HRHCP00_CUSTOMIZING - Error Texts Customizing Personnel Cost Planning

• Message number: 021

• Message text: In the customer namespace the interface group "M" is not permissible

What causes this issue?

You are editing a data collection implementation in the customer
namespace. For data collectors in the customer namespace, only the
groups <ls>Data Collection Employee Data</> and <ls>Data Collection
Organizational Objects</> are allowed.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

HRHCP00_CUSTOMIZING021 - Details

• The SAP error message HRHCP00_CUSTOMIZING021 indicates that there is an issue with the interface group "M" in the customer namespace. This error typically arises in the context of SAP HR (Human Resources) or SAP HCM (Human Capital Management) when customizing or configuring certain aspects of the system.
  
  Cause:
  The error occurs because the interface group "M" is not allowed in the customer namespace. In SAP, certain namespaces are reserved for standard SAP objects, and custom developments or configurations should be done in the customer namespace (usually starting with "Z" or "Y"). The use of "M" suggests that there is an attempt to use a standard or reserved interface group in a way that is not permitted.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Customization Settings: Review the customization settings related to the interface groups in your SAP system. Ensure that you are not trying to use a reserved interface group.
  
  
  Use