How To Fix TN534 - Preconditions have changed; queue is inconsistent

SAP Error Message - Details

• Message type: E = Error

• Message class: TN - Support Package Manager (SPAM) Messages

• Message number: 534

• Message text: Preconditions have changed; queue is inconsistent

What causes this issue?

The preconditions have changed considerably since the last time the
installation/upgrade queue was calculated. This queue is no longer
consistent.
Support Packages have probably been imported or the installation was
started or finished in another session (for example, by another user).

System Response

The system does not start the import of the existing
installation/upgrade queue. Processing is reset to the initial screen.

How to fix this error?

Check whether the installation or upgrade package that you want to
import can still be imported into your SAP system. Create a new queue if
necessary.

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.