Message type: E = Error
Message class:  REMMMN - Messages for Mandate Master Data 
Message number: 081
Message text: House bank &1 is currently locked by user &2
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The SAP error message REMMMN081 indicates that a house bank is currently locked by a specific user. This typically occurs when a user is trying to perform an operation on a house bank that is already being accessed or modified by another user. Here’s a breakdown of the cause, potential solutions, and related information:
Cause: Concurrent Access: The house bank is being accessed by another user, which locks it for modifications. Transaction in Progress: A transaction involving the house bank is currently in progress, preventing other users from making changes. System Locking Mechanism: SAP uses a locking mechanism to prevent data inconsistencies. If a user has opened a session that locks the house bank, others will be unable to access it until the lock is released.
Solution: Wait and Retry: If the lock is temporary, waiting for a few moments and then retrying the operation may resolve the issue. Identify the Locking User: Use transaction code SM12
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