As
said, you need to mention the country for which you refer to in the payroll posts.
In Australia, V0 assignment is used for superannuation fund created by function SUPER. This info is used in reporting as well as other payroll functions.
It is also used in some installations to indicate a transaction date (e.g., IT 15, leave start date, etc), to display in payslip, using a custom operation adapted from XV0.
Op'n XV0 sets V0TYP & V0ZNR, if necesary it creates a new V0ZNR for a V0TYP. It is applicable for several countries.
op'n ADDWS similar to ADDWT. The only difference is that it writes the value to table V0 as well. This will create a new V0 pointer I expect.
For Sweden (molga 23), op'n SEZLD sets V0TYP=A and V0ZNR based on feature 23ZLD.
To find where the V0 info is created for a w/t,
Run payroll with log
Expand the log at the top node for a pay period.
Find successively the w/t, and check the first occurrence of the V0 type & pointer for the w/t in output table from a PCR or function.
Hope this helps.
br JG