SAP Message BEA426 - &1 &2: Error occurred during partner processing

Diagnosis
Partner processing was terminated for billing document &2& inapplication &v1& because an error occurred.

Procedure
Check the partner assignment at the billing header level (menu path:Billing --> Edit Billing Documents).
Also check the settings made for the following Customizing activities:

  • Define Partner Functions

  • Define Partner Determination Procedure

    • For more information, refer also to the IMG step entitledDefine Settings for Partner Processing.