How To Fix PK030 - Only one entry allowed for supply area, resp. person, or stge location

SAP Error Message - Details

• Message type: E = Error

• Message class: PK - Production - KANBAN

• Message number: 030

• Message text: Only one entry allowed for supply area, resp. person, or stge location

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

You can select Kanban data according to the three options listed
below:
For a supply area:
Here, enter only the supply area.
For a supply area of a specific responsible person:
Here, only enter the responsible period.
For all supply areas that are assigned to a certain storage location:
Here, only enter the storage location.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PK030 - Only one entry allowed for supply area, resp. person, or stge location ?

  The SAP error message PK030 ("Only one entry allowed for supply area, resp. person, or stge location") typically occurs in the context of production planning or materials management when there is an attempt to create or modify a record that violates the constraints set by the system regarding supply areas, responsible persons, or storage locations.
  Cause:
  
  
  Duplicate Entries: The error usually arises when there are multiple entries for a supply area, responsible person, or storage location where only one entry is allowed. This can happen if:
  
  You are trying to assign multiple supply areas to a single material or production order.
  There are conflicting entries in the configuration or master data.
  The system is set up to allow only one entry for a specific combination, and the user is attempting to create or modify it incorrectly.
  
  
  
  Configuration Issues: The configuration settings in the system may restrict the number of entries allowed for certain fields, leading to this error when the limit is exceeded.
  
  
  Solution:
  
  
  Check Existing Entries: Review the existing entries for the supply area, responsible person, or storage location in the relevant master data (e.g., material master, production order, etc.). Ensure that there are no duplicate entries.
  
  
  Modify or Delete Duplicates: If duplicates are found, you may need to modify or delete the unnecessary entries to comply with the system's constraints.
  
  
  Review Configuration Settings: If you believe the configuration should allow multiple entries, consult with your SAP administrator or a functional consultant to review the settings. They may need to adjust the configuration to allow for more than one entry if that aligns with your business processes.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the configuration and limitations related to supply areas, responsible persons, and storage locations.
  
  
  Error Logs: Check the error logs for more detailed information about the context in which the error occurred. This can provide insights into what specific action triggered the error.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM02 (Change Material), CO01 (Create Production Order), or others depending on where the error is occurring.
  Master Data Management: Understanding how master data is structured in SAP can help prevent this error in the future.
  User Roles and Authorizations: Ensure that users have the appropriate roles and authorizations to make changes to the relevant data without causing conflicts.
  
  If the issue persists after following these steps, it may be beneficial to engage with SAP support or a consultant who specializes in your specific SAP module for further assistance.