AP Standalone Match Reversal

Has anyone written a utility to reverse a System21 Standalone Match
transaction?

It looks like it might be as simple as -
   update PMP09 set IUOM09 = ' ', INVD09 = 0, IPRC09 = 0, CRTI09 = 0,
INVN09 =' ', INVT09 = ' ', INVU09 = ' 'where CONO09='xx' and
INVN09='xxxxxx' and GRNO09=xxxxxx and ORDN09='xxxxxx'
   update PMP03 set QINV03 = QINV03-xxxxx where CONO03=CONO09 and
ORDN03=ORDN09 and LINE03=LINE09 and BOSN03=BRSN09

But if it were, wouldn't System21 come with a reversal option?
We get requests from AP to undo 'em on occasion.  I'd be interested to
see what others do.

Thanks!
-BobE
 Pollak Engineered Products
 V3.5.2b SP3 on V5R2


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