How To Fix 63401 - No main contractual partner with customer acct exists

63401 - Overview

• Message type: E = Error

• Message class: 63 - Messages for Real Estate Management

• Message number: 401

• Message text: No main contractual partner with customer acct exists

What causes this issue?

No main contractual partner with customer account exists.

System Response

The rental agreement cannot be activated without a tenant with a
customer account.

How to fix this error?

Create a customer for this rental agreement and assign a customer
account.

Error message extract from SAP system. Copyright SAP SE.

63401 - Details

• The SAP error message "63401 No main contractual partner with customer account exists" typically occurs when there is an issue with the customer master data in the SAP system. This error indicates that the system cannot find a main contractual partner associated with the specified customer account. Here’s a breakdown of the cause, potential solutions, and related information:
  
  Cause:
  
  Missing Main Contractual Partner: The customer account you are trying to access or process does not have a main contractual partner defined in the system.
  Data Inconsistency: There may be inconsistencies or missing data in the customer master records.
  Incorrect Customer Account: The customer account number being referenced may be incorrect or does not exist in the system.
  
  Configuration Issues: There may be configuration issues in the customer account settings or in the partner determination procedure.
  
  
  Solution:
  
  
  Check Customer Master Data:
  
  Go to transaction code XD03 (Display Customer) or VD03 (Display Customer - Sales Area) and check the customer