How To Fix AP306 - Partner was not specified as unique.

SAP Error Message - Details

• Message type: E = Error

• Message class: AP - Investment program messages

• Message number: 306

• Message text: Partner was not specified as unique.

What causes this issue?

You did not enter a defined partner as a characteristic in this report.
However, when you select by partner, the system can select only
individual partners.

System Response

The report is not executed.

How to fix this error?

Check your entries. Make sure that you select only one partner (and
naturally only one partner function).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AP306 - Partner was not specified as unique. ?

  The SAP error message AP306 ("Partner was not specified as unique") typically occurs in the context of partner determination in SAP, particularly when dealing with business partners in transactions such as sales orders, purchase orders, or other documents that involve partner roles (like sold-to party, ship-to party, etc.).
  Cause:
  The error usually arises due to one of the following reasons:
  
  Multiple Partner Entries: The system finds multiple entries for a partner role in the partner determination procedure, and it cannot determine which one to use.
  Missing Unique Partner: The partner role is not defined uniquely in the system, meaning that the system cannot identify a single partner for the transaction.
  Configuration Issues: There may be issues in the configuration of partner determination procedures, such as missing or incorrect settings in the partner determination schema.
  
  Solution:
  To resolve the AP306 error, you can take the following steps:
  
  
  Check Partner Determination Procedure:
  
  Go to the configuration settings for partner determination (Transaction code: SPRO).
  Navigate to the relevant area (e.g., Sales and Distribution or Materials Management) and check the partner determination procedure.
  Ensure that the partner roles are correctly defined and that there are no duplicates.
  
  
  
  Review Partner Master Data:
  
  Check the master data for the business partners involved in the transaction.
  Ensure that there are no duplicate entries for the same partner role.
  
  
  
  Assign Unique Partners:
  
  If multiple partners are assigned to a role, ensure that only one partner is assigned as unique for the transaction.
  You may need to adjust the partner assignments in the document you are working with.
  
  
  
  Test the Configuration:
  
  After making changes, test the configuration by creating a new transaction to see if the error persists.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for specific guidance on partner determination and configuration.
  
  
  
  Related Information:
  
  
  Transaction Codes: You may find it useful to familiarize yourself with transaction codes related to partner determination, such as:
  
  BP (Business Partner)
  VD01 (Create Customer)
  XD01 (Create Customer (Centrally))
  
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for AP306 in the SAP Support Portal.
  
  
  User Exits and BAdIs: If you have custom logic implemented, check if any user exits or BAdIs (Business Add-Ins) are affecting partner determination.
  
  
  By following these steps, you should be able to identify the cause of the AP306 error and implement a solution to resolve it. If the issue persists, consider reaching out to your SAP support team for further assistance.