UOMConv3 error on Retrieve Detail Hours from Project Tracker, Summary sheet

Seeing an UOMConv3 error when trying to Retrieve “Detail Hours” from the Project Tracker, Summary sheet - E10 10.2.xxx.

Ref screen shot…
image

Just wondering if anyone else has seen this in Project tracker,
And how/if they found the offending record(s)?

I’ve only seen similar errors on Jobs/PO Receipts, where the records involved were obvious.

So… I’m still trying to figure out what records the Detail Hours --> Retrieve is looking at.
AND why a UOMConv would even matter?
–> Erp.Contracts.BO.ProjSummary.dll, ProjectCostsHours(String curProjectID)

Thanks in advance