During the planning process with the Maintenance Planner, consider that the update can require the uninstallation of product instances and software components. The Maintenance Planner indicates the necessary uninstallations and the relevant SAP Notes. Read the SAP Notes carefully and, if necessary, carry out possible maintenance steps manually before you start the update.

During the update, the Software Update Manager lists the planned uninstallations and the relevant SAP Notes again in phase PREP_EXTENSION/UNINSTALL_PREPARE.

Note that the uninstallation of software components requires the deletion of SAP repository or ABAP Dictionary objects, which might impact customer developments and functions. Using the SAP Add-On Installation Tool (transaction SAINT), you can carry out the uninstallation in a test scenario before the update. The SAP Add-On Installation Tool simulates the uninstallation, performs several detailed checks, and provides you with information about affected customer developments and functions. For more information, see the online help of the tool.

Note also that the uninstallation of the mentioned software components is integrated in the SUM procedure. This also applies if only the transaction SAINT is mentioned in the referenced SAP notes.

To simulate the uninstallation, proceed as follows: