How To Fix FMCCAVC312 - The bank account assigned to the bank clearing account is not unique

FMCCAVC312 - Overview

• Message type: E = Error

• Message class: FMCCAVC - Message class CCAVC - Cash control

• Message number: 312

• Message text: The bank account assigned to the bank clearing account is not unique

What causes this issue?

You are using the cash-based availability control (cash control). In
this case, every used bank clearing account (or bank subaccount) has to
be unambiguously assigned to a bank account. It seems not to be the
case - the used bank clearing account is assigned to more than one bank
account. This is not allowed.

System Response

Posting is terminated.

How to fix this error?

Define a unique assignment between a bank clearing account to be used
and a corresponding bank account.

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.

FMCCAVC312 - Details

• The SAP error message FMCCAVC312 indicates that there is an issue with the bank account assignment in the context of a bank clearing account. This error typically arises when the system finds multiple entries for the same bank account in the configuration, which leads to ambiguity in processing transactions.
  
  Cause:
  
  Duplicate Bank Accounts: The most common cause of this error is that there are multiple entries for the same bank account in the system. This can happen if the same bank account is assigned to different bank clearing accounts or if there are duplicate entries in the configuration.
  Incorrect Configuration: The bank clearing account may not be configured correctly, leading to conflicts in the assignment of bank accounts.
  Data Migration Issues: If data has been migrated from another system, it is possible that duplicate records were created during the migration process.
  
  
  Solution:
  
  
  Check Bank Account Configuration:
  
  Go to the configuration settings for bank accounts in SAP (Transaction