How To Fix FMCA_PSOB056 - Only one business partner can be assigned to contract object &1

SAP Error Message - Details

• Message type: E = Error

• Message class: FMCA_PSOB - Contract Object

• Message number: 056

• Message text: Only one business partner can be assigned to contract object &1

What causes this issue?

You want to assign more than one business partner with contract account
data to a contract object or object type &V1&. However, in Customizing,
it is specified that only one assignment between contract object and
business partner is allowed.
You can only assign one business partner for object type &V1&.

System Response

The assignment of another business partner is not carried out.

How to fix this error?

You can define whether several or only one business partner per
contract object is allowed. You do this in Customizing, under
<LS>Financial Accounting -> Contract Accounting -> Basic Functions ->
Contract Object -> Number Ranges and Contract Object Categories ->
Define Contract Object Categories and Assign Number Ranges </> for the
respective object types with the <LS>One Partner</> indicator.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FMCA_PSOB056 - Only one business partner can be assigned to contract object &1 ?

  The SAP error message FMCA_PSOB056 indicates that there is an issue with the assignment of business partners to a contract object. Specifically, it states that only one business partner can be assigned to the specified contract object (denoted by &1). This error typically arises in the context of contract management within SAP, particularly when dealing with financial contracts or agreements.
  Cause:
  
  Multiple Business Partners: The error usually occurs when there is an attempt to assign more than one business partner to a contract object that is designed to accept only a single business partner.
  Configuration Settings: The system configuration may restrict the assignment of multiple business partners to certain contract types.
  Data Entry Error: There may be a mistake in the data entry process where multiple business partners were inadvertently selected or assigned.
  
  Solution:
  
  Review Business Partner Assignment: Check the contract object in question and ensure that only one business partner is assigned. If multiple business partners are assigned, remove the additional ones.
  Correct Data Entry: If the error was due to incorrect data entry, correct the assignment by selecting the appropriate business partner.
  Consult Configuration: If you believe that the business logic should allow multiple business partners, consult with your SAP configuration team to review the settings related to business partner assignments for the specific contract type.
  Use Transaction Codes: Utilize relevant transaction codes (like BP for Business Partner or FMCA for Contract Management) to manage and review the business partner assignments.
  Documentation and Help: Refer to SAP documentation or help resources for further guidance on managing business partners and contracts.
  
  Related Information:
  
  SAP Notes: Check for any SAP Notes related to this error message for potential patches or updates that may address the issue.
  Transaction Codes: Familiarize yourself with transaction codes related to contract management and business partner management, such as BP, FMCA, FMC1, etc.
  User Roles and Authorizations: Ensure that the user has the necessary roles and authorizations to make changes to business partner assignments.
  
  If the issue persists after following these steps, it may be beneficial to reach out to your SAP support team or consult with an SAP expert for further assistance.