DMT Delete - not deleting

Trying to delete Sales boundaries in specific sales territories. I have DMT selected to delete. BUT…I keep getting the following error:

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I tried some other suggestions from previous posts (one being not including all the data - but all columns I’ve included are mandatory for DMT).

Information I’m providing when set to Delete in DMT.

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Any suggestions on how to resolve?

Thanks in advance

The DMT template for Sales Boundary shows country as a string but you have a number listed. Not sure if that’s the cause of the error but I would look to change.

That’s exactly it! Thanks so much!