How To Fix WY156 - Partner function &1 cannot be used by suppliers in account group &2

SAP Error Message - Details

• Message type: E = Error

• Message class: WY - Supplier Master

• Message number: 156

• Message text: Partner function &1 cannot be used by suppliers in account group &2

What causes this issue?

Partner function &V1& is assigned to your vendor at level &V3&. This
function is entered by the vendor.
However, this partner function is not allowed for vendors in account
group &V2& which is to be assigned.

System Response

A change of account group is not permitted.

How to fix this error?

Please change the partner functions for the account group in
Customizing.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WY156 - Partner function &1 cannot be used by suppliers in account group &2 ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WY156 - Partner function &1 cannot be used by suppliers in account group &2
  
  Cause:
  This error occurs when you try to assign a partner function to a vendor (supplier) master record, but the partner function is not allowed for the vendor's account group.
  
  Partner functions define roles in business partner relationships (e.g., ordering address, invoicing party).
  Account groups classify vendors and control which partner functions can be assigned.
  The system checks the allowed partner functions for the vendor's account group.
  If the partner function you are trying to assign is not configured as valid for that account group, the system throws this error.
  
  
  Solution:
  To resolve this error, you need to ensure that the partner function is allowed for the vendor's account group.
  Steps:
  
  
  Check the vendor's account group:
  
  Go to vendor master data (transaction XK03 or FK03).
  Note the account group of the vendor.
  
  
  
  Check allowed partner functions for the account group:
  
  
  Use transaction SPRO ?
  
  SAP Reference IMG ?
  
  Logistics - General ?
  
  Business Partner ?
  
  Customers ?
  
  Partner Functions ?
  
  Define Partner Functions for Vendor Account Groups
  
  
  Or directly via transaction OBD3 (Vendor Account Groups).
  
  
  
  
  Adjust partner functions:
  
  In the configuration, assign the required partner function to the vendor account group.
  Save and transport the changes if necessary.
  
  
  
  Re-try the operation:
  
  After the partner function is allowed for the account group, you can assign it to the vendor master record without error.
  
  
  
  
  Related Information:
  
  
  Partner Functions in Vendor Master:
  
  Partner functions are used to define different roles such as ordering address (WE), invoicing party (RE), goods supplier (LF), etc.
  
  
  Account Groups:
  
  Vendor account groups control the number range and field selection for vendor master data and also restrict which partner functions can be assigned.
  
  
  Transaction Codes:
  
  XK01/XK02/XK03 – Create/Change/Display Vendor Master
  OBD3 – Vendor Account Groups configuration
  SPRO – IMG configuration
  
  
  
  Note:
  
  If you are working with Business Partner (BP) approach in S/4HANA, partner functions and account groups are managed differently, but the principle of allowed partner functions per group still applies.
  
  
  
  If you need help with the exact configuration steps or further troubleshooting, please provide your SAP system version and whether you are using classic vendor master or Business Partner approach.