Using STVARV to Maintain TVARV Variables for SAP

SAP has a transaction STVARV to maintain your own selection variables for report variants.
This means you can have named variables for your saved variants so if a set of common parameters or selection options change you do not have to change a bunch of variants you just maintain the named variable in table TVARV.
Where do you apply selection variables in variants?
Whenever you create a variant you see screen with a matrix of check boxes in rows next to your Selection screen field names, if you check the box in the 'L' column that corresponds to the field you want to default and the click the 'Selection variables' button you get a screen where you can apply the TVARV defined values.

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Resetting the SAP Posting Period

Ever had the situation where the SAP transaction MMPV has been run and set with the wrong period?
The other situation is where you use the setting for posting to previous period or negative quantities and you forget to set the radio buttons for these options.
Fortunately SAP provides a simple program to correct this but executing it requires a slightly cryptic procedure. The program is called RMMMINIT and it resets the period but it requires the user set a PID (parameter id) with the current date in the format YYYYMMDD. The PID is MMPI_READ_NOTE and if you where running the RMMMINIT program on October 19 th 2005 the value for the PID would be 20051019.

The SAP notes related to this little endeavour are 487381 and 369637.