Since this question obviously has different potential answers depending on individual circumstances, I decided to add my problem and what solved it:
Problem: I asked someone to copy the binary archive, make some changes, and then transfer the binary file to me. This caused a binary conflict.
Solution: I had to create a new certificate. I copied the package identifier from the development consul, pasted it into xcode and was able to download.
Note: You can restore the new package identifier by enabling "In-app purchases" in the Features section.

Aus_10 04 Sep '19 at 17:49 2019-09-04 17:49
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