How To Fix PK164 - You can only make one entry for a supply source

SAP Error Message - Details

• Message type: E = Error

• Message class: PK - Production - KANBAN

• Message number: 164

• Message text: You can only make one entry for a supply source

What causes this issue?

You can display the source view as follows:
for in-house production, you can display the area of a responsible
person
for external procurement, you can display data for a particular vendor
for delivery from another plant, you can display the delivering plant
for stock transfer, you can display the delivering storage location

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?

Please make the appropriate entries for a source.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PK164 - You can only make one entry for a supply source ?

  The SAP error message PK164, which states "You can only make one entry for a supply source," typically occurs in the context of planning and procurement processes, particularly when dealing with supply sources in the SAP system. This error indicates that there is an attempt to assign multiple supply sources to a single planning object (like a material or a production order) where only one is allowed.
  Cause:
  
  Multiple Supply Sources: The primary cause of this error is that the system has detected multiple supply sources assigned to a single material or planning object, which violates the business rules set in the system.
  Configuration Issues: There may be configuration settings in the material master or in the planning settings that restrict the number of supply sources.
  Data Entry Errors: Users may have inadvertently entered multiple supply sources in the relevant fields during data entry.
  
  Solution:
  
  Review Supply Source Assignments: Check the supply source assignments for the material or planning object in question. Ensure that only one supply source is assigned.
  
  Navigate to the relevant transaction (e.g., MD04 for stock/requirements list) and review the supply sources.
  
  
  Adjust Material Master Data: If necessary, go to the material master (transaction MM03) and check the purchasing or planning views to ensure that only one supply source is defined.
  Correct Data Entry: If the error was caused by incorrect data entry, correct the entries to ensure compliance with the system's requirements.
  Consult Configuration Settings: If you have access to configuration settings, check the settings related to supply source assignment in the relevant planning area. Adjust them if needed, but ensure that any changes align with business processes.
  Consult Documentation: Review SAP documentation or help files related to supply source management for additional guidance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM03 (Display Material), ME11 (Create Purchasing Info Record), and MD04 (Stock/Requirements List).
  SAP Notes: Check for any SAP Notes related to this error message for potential patches or updates that may address the issue.
  User Roles and Authorizations: Ensure that users have the appropriate roles and authorizations to make changes to supply source assignments.
  Training and Best Practices: Consider providing training for users on best practices for managing supply sources to prevent similar errors in the future.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in materials management or production planning.