How To Fix COM_PARTNER559 - Only one partner function of function category &1 is allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: COM_PARTNER - Partner Processing Messages

• Message number: 559

• Message text: Only one partner function of function category &1 is allowed

What causes this issue?

Only one partner function of function category &V1& can be used in the
object &V2&.
&SYSTEM_RESPONSES&
If the function category &V2& is used several times in a partner
determination procedure, the danger exists that the system, when
processing a process, cannot distinguish which partner functions should
be used to generate a specific partner, as there are several
possibilities for this. For example, two partner functions with function
category "ship-to party" can cause the system to decide on a partner
function without determining, but the user would have presumed the other
partner function to be the correct ship-to party.

How to fix this error?

Remove the partner function &V3& or every other partner function for the
function category &V1&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message COM_PARTNER559 - Only one partner function of function category &1 is allowed ?

  The SAP error message COM_PARTNER559 indicates that there is an issue with the partner functions in a particular business transaction or document. Specifically, it states that only one partner function of a certain function category is allowed. This typically occurs in scenarios where multiple partner functions of the same category are being assigned, which is not permitted by the system configuration.
  Cause:
  The error is usually caused by:
  
  Duplicate Partner Functions: You may have assigned more than one partner function of the same category (e.g., multiple sold-to parties, multiple ship-to parties) in a document or transaction.
  Configuration Settings: The configuration in the partner function settings may restrict the assignment of multiple partners of the same function category.
  Data Entry Errors: Incorrect data entry or selection of partner functions during the creation or modification of a document.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Partner Functions:
  
  Review the partner functions assigned to the document or transaction. Ensure that there is only one partner function for each category.
  Navigate to the relevant transaction (e.g., sales order, purchase order) and check the partner tab to see the assigned partners.
  
  
  
  Modify Partner Assignments:
  
  If you find multiple partner functions of the same category, remove the duplicates and keep only one.
  Save the changes and try to process the document again.
  
  
  
  Review Configuration:
  
  If you believe the configuration should allow multiple partners, consult with your SAP configuration team to review the settings for partner functions in the relevant module (e.g., SD, MM).
  Check the configuration in transaction SPRO under the relevant area (e.g., Sales and Distribution > Basic Functions > Partner Determination > Define Partner Functions).
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help files for more details on partner functions and their configurations.
  
  
  
  Testing:
  
  After making changes, test the document creation or modification process to ensure that the error does not reoccur.
  
  
  
  Related Information:
  
  Partner Functions: These are roles that a business partner can play in a transaction (e.g., sold-to party, ship-to party, payer).
  Function Categories: Each partner function belongs to a specific category that defines its role in the business process.
  Transaction Codes: Familiarize yourself with relevant transaction codes (e.g., VA01 for sales order creation, ME21N for purchase order creation) to navigate and troubleshoot effectively.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or refer to SAP Notes for any known issues or patches related to this error message.