So, maybe the vendor data looks like like this?
[TABLE="width: 128"]
<colgroup><col style="width:48pt" width="64" span="2"> </colgroup><tbody>[TR]
[TD="class: xl65, width: 64"]Vendor #[/TD]
[TD="class: xl65, width: 64"]Tax ID[/TD]
[/TR]
[TR]
[TD="class: xl65, align: right"]11111[/TD]
[TD="class: xl65, align: right"]201[/TD]
[/TR]
[TR]
[TD="class: xl65, align: right"]22222[/TD]
[TD="class: xl65, align: right"]202[/TD]
[/TR]
[TR]
[TD="class: xl65, align: right"]33333[/TD]
[TD="class: xl65, align: right"]203[/TD]
[/TR]
[TR]
[TD="class: xl65, align: right"]12345[/TD]
[TD="class: xl65, align: right"]303[/TD]
[/TR]
[TR]
[TD="class: xl65, align: right"]55555[/TD]
[TD="class: xl65, align: right"]404[/TD]
[/TR]
[TR]
[TD="class: xl65, align: right"]66666[/TD]
[TD="class: xl65, align: right"]505[/TD]
[/TR]
[TR]
[TD="class: xl65, align: right"]23456[/TD]
[TD="class: xl65, align: right"]606[/TD]
[/TR]
[TR]
[TD="class: xl65, align: right"]34567[/TD]
[TD="class: xl65, align: right"]999[/TD]
[/TR]
[TR]
[TD="class: xl65, align: right"]45678[/TD]
[TD="class: xl65, align: right"]1010[/TD]
[/TR]
[TR]
[TD="class: xl65, align: right"]77777[/TD]
[TD="class: xl65, align: right"]1011[/TD]
[/TR]
[TR]
[TD="class: xl65, align: right"]88888[/TD]
[TD="class: xl65, align: right"]1012[/TD]
[/TR]
</tbody>[/TABLE]
And, the VendorPmts is like this:
[TABLE="width: 128"]
<colgroup><col style="width:48pt" width="64" span="2"> </colgroup><tbody>[TR]
[TD="width: 64"]Vendor #[/TD]
[TD="width: 64"]Tax Id[/TD]
[/TR]
[TR]
[TD="align: right"]12345[/TD]
[TD="align: right"]303[/TD]
[/TR]
[TR]
[TD="align: right"]23456[/TD]
[TD="align: right"]606[/TD]
[/TR]
[TR]
[TD="align: right"]34567[/TD]
[TD="align: right"]999[/TD]
[/TR]
[TR]
[TD="align: right"]66666[/TD]
[TD="align: right"]505[/TD]
[/TR]
[TR]
[TD="align: right"]77777[/TD]
[TD="align: right"]1011[/TD]
[/TR]
</tbody>[/TABLE]
With B2 filled down: =VLOOKUP(A2,VenderData!$A$2:$B$100,2,FALSE)