Update Voucher Line Withholding Page Does Not Display Vouchers With Same Voucher Line On VCHR_LINE_W

In PeopleSoft 9.1 Users created a vendor and on the Vendor >  Location > 1099 page added 2 withholding classes.  They marked both classes as Default.

As a result, all vouchers have 2 classes on each voucher line. 

Users updated the vendor information, de-selecting the default box on one of the rows.  They also reduced the amount manually on the Wthd_Trxn_Tbl through the Withholding Adjustment page since amounts were counted twice, once for each category.

However there was one voucher that users wanted to mark as non-Withholding. So they went Update Voucher Line Withholding and could not see and select the voucher.  Our technical support reviewed the coding and it was indeed due to the same voucher line appearing multiple times on PS_VCHR_LINE_WTHD.