How To Fix IS556 - Serial number & is locked

IS556 - Overview

• Message type: E = Error

• Message class: IS - Equipment management

• Message number: 556

• Message text: Serial number & is locked

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message IS556 - Serial number & is locked ?

  The SAP error message IS556, which states "Serial number & is locked," typically occurs when you attempt to perform an operation on a serial number that is currently locked in the system. This can happen in various scenarios, such as during goods movements, inventory management, or when trying to perform a transaction involving a serialized material.
  Causes:
  
  In-Use Serial Number: The serial number is currently being used in another transaction or process, which locks it for further operations.
  Incomplete Transactions: A previous transaction involving the serial number was not completed successfully, leaving it in a locked state.
  User Lock: The serial number may be locked by a specific user due to a manual lock or due to a system error.
  System Configuration: Certain configurations in the system may lead to serial numbers being locked under specific conditions.
  
  Solutions:
  
  Check Transaction Status: Verify if the serial number is currently being used in another transaction. You can do this