How To Fix CONSENT_MANAGEMENT149 - Multiple implementations for interface IF_CM_BLOCKED_DATA_SUBJECT found

SAP Error Message - Details

• Message type: E = Error

• Message class: CONSENT_MANAGEMENT - Consent Administration: General Message Class

• Message number: 149

• Message text: Multiple implementations for interface IF_CM_BLOCKED_DATA_SUBJECT found

What causes this issue?

A consent uses data subject ID type &V1&. Multiple implementations for
interface IF_CM_BLOCKED_DATA_SUBJECT for this data subject ID type
exist. Only one class is allowed to handle a certain data subject ID
type.
Class &V2& and &V3& both try to register for data subject ID type &V1&
(method GET_HANDLED_DATA_SUBJ_ID_TYPE).

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CONSENT_MANAGEMENT149 - Multiple implementations for interface IF_CM_BLOCKED_DATA_SUBJECT found ?

  The SAP error message CONSENT_MANAGEMENT149 indicates that there are multiple implementations of the interface IF_CM_BLOCKED_DATA_SUBJECT. This typically occurs in the context of SAP's Consent Management functionality, which is part of the broader Data Privacy and Protection framework.
  Cause:
  The error arises when the system encounters more than one implementation of the specified interface. This can happen due to:
  
  Multiple Implementations: There may be multiple classes or components that implement the IF_CM_BLOCKED_DATA_SUBJECT interface, leading to ambiguity in which implementation should be used.
  Configuration Issues: Incorrect or incomplete configuration in the system that leads to the system not being able to determine the correct implementation.
  Development Changes: Recent changes in the development environment, such as new implementations being added without proper checks.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify Implementations:
  
  Use transaction code SE80 (Object Navigator) or SE11 (Data Dictionary) to search for all classes that implement the IF_CM_BLOCKED_DATA_SUBJECT interface.
  Check the list of implementations to see which ones are active and relevant.
  
  
  
  Review Implementations:
  
  Review the code of the implementations to determine if they are all necessary. If some are redundant or outdated, consider deactivating or deleting them.
  
  
  
  Adjust Configuration:
  
  Ensure that the configuration settings in the Consent Management area are correctly pointing to the intended implementation. This may involve checking customizing settings in transaction SPRO.
  
  
  
  Check for Enhancements:
  
  If you are using enhancements or custom developments, ensure that they are not conflicting with standard implementations.
  
  
  
  Testing:
  
  After making changes, test the functionality to ensure that the error is resolved and that the system behaves as expected.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to Consent Management for any specific guidelines or updates that may address this issue.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might provide additional insights or patches related to this error.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered and resolved similar issues.
  Version Compatibility: Ensure that your SAP system is up to date with the latest patches and updates, as this can sometimes resolve unexpected errors.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance.