How To Fix TN153 - Caution: Upgrade or Prepare is still running; import not allowed

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 153

• Message text: Caution: Upgrade or Prepare is still running; import not allowed

What causes this issue?

You are upgrading your system. The upgrade is currently in the PREPARE
phase. You are not allowed to import OCS Packages (add-on
installations/upgrade, Support Packages) in this phase since this
changes the system state on which the current upgrade is based.

System Response

The import of the OCS queue terminates.

How to fix this error?

If the upgrade is in the PREPARE phase, and you have to import the OCS
queue, proceed as follows:
Delete the queue by using one of the following:
Support Package Manager: Choose <ZK>Display/ Define -> Delete Queue</>.
Add-On Installation Tool: Choose <ZK>Back</>.
Completely reset PREPARE as described in the upgrade guide.
Redefine the queue and import it.

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.