The Help Portal sections such as 'Update Management' found at the following URL go into detail about uses of transaction SM13:
This should help you investigate how this transaction is used for Basis Administration of SAP updates.
SM13 transaction code is basically used to monitor the update statistics.In this t code you can find out if any uncommited updates are there for a particular user.
You can check critical updates and non critical updates here.And also you can specify the date and time when there is an update error happened in your system.
In netweaver system, Shift +F5 will lead you to the administration of the update system.
The update management initial screen (transaction SM13) can be seen below
Display update requests
Analyze problems pertaining to the update
Test and debug canceled update requests
Display and reset the status of update requests (see The Most Important Update Statuses)
Delete update requests
Display statistics on updates
We can check the updates in sm13 . This will be used frequently by
admins to have a look at the processing of V1/V2 updates.
Usually V1 is more critical than V2. If you see any errors,
then it is possible to rectify and
re-update the same in SM13.
Update management supports the following functions:
Selecting and Displaying Updates
Analyzing Cancelled Updates
Reorganize update records
Configuring Update Groups
Display and reset update statistics
Display update server