How To Fix UCS0042 - System error while setting the transaction data lock

SAP Error Message - Details

• Message type: E = Error

• Message class: UCS0 - Messages for Status Management

• Message number: 042

• Message text: System error while setting the transaction data lock

What causes this issue?

When you attempted to lock the transaction data to be processed, an
internal error was established in the SAP lock management.

System Response

The SAP system cannot enter the requested lock correctly in the lock
table of the <DS:GLOS.352A9F79AAE85CD5E10000009B38F974>enqueue server
</>. Therefore, the enqueue function module triggers an appropriate ex
ception. If this exception is not intercepted and dealt with, this
automatically leads to the termination of the current transaction.

How to fix this error?

The most common reason for this error message is that the enqueue server
can no longer be accessed. The cause of this can be that either the
enqueue server itself or the message server, which creates the
connection between the application server and enqueue server in a
decentral system configuration, is no longer available.

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.