AP Invoice GRNI Clearing DMT

I have created a group in AP Invoice entry for GRNI clearing
I have then gone to New > New manual GRNI clearing
then if I was to add a line manually I would go then go to New > New Receipt Line and then pick the PO and pack slip from the screen that pops up.

I have over 500 lines to add so i have uploaded them via DMT and more precisely AP Invoice Detail.

Most of them uploaded to the group, but there was still a lot that wouldn’t for no particular reason as far as I could see compared to the PO receipts that were successfully uploaded.

I ended up doing the upload in two goes, but now I have 80 that will not upload.

Has anyone ever come across this issue or have any idea why this would happen

cheers

I started down this path after a go live and accounting did one mass clearing batch faster than I could have prepped the DMT run.