How To Fix /CPD/PWS_MP_API018 - Ref. Object ID &1 is already linked to &3 &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /CPD/PWS_MP_API -

• Message number: 018

• Message text: Ref. Object ID &1 is already linked to &3 &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /CPD/PWS_MP_API018 - Ref. Object ID &1 is already linked to &3 &2 ?

  The SAP error message /CPD/PWS_MP_API018 indicates that a reference object (identified by &1) is already linked to another object (identified by &2) of a specific type (identified by &3). This typically occurs in the context of managing relationships between objects in SAP, such as when trying to create or modify links between master data records, such as materials, vendors, or customers.
  Cause:
  
  Duplicate Link Attempt: The error usually arises when there is an attempt to link an object that is already associated with another object of the same type. For example, if you are trying to link a material to a vendor, but that material is already linked to a different vendor, this error will occur.
  Data Integrity Constraints: SAP enforces data integrity rules to prevent multiple associations that could lead to inconsistencies in the data model.
  
  Solution:
  
  Check Existing Links: Before attempting to create a new link, check the existing associations for the reference object (&1). You can do this by querying the relevant tables or using transaction codes that allow you to view relationships.
  Remove Existing Link: If the existing link is no longer valid or needed, you may need to remove it before creating a new one. Ensure that this action aligns with your business processes and data integrity requirements.
  Modify the Link: If you need to change the association, consider modifying the existing link instead of creating a new one.
  Consult Documentation: Review the relevant SAP documentation or help files for the specific module you are working with to understand the rules governing object relationships.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may use transaction codes like SE11 (Data Dictionary), SE16 (Data Browser), or specific transaction codes related to the module you are working with (e.g., MM for materials management, SD for sales and distribution).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. Sometimes, there may be specific fixes or recommendations provided by SAP.
  User Authorization: Ensure that you have the necessary authorizations to modify the links between objects, as lack of permissions can also lead to errors.
  
  If the problem persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.