This time I am migrating from Epicor 10.1.400 to 10.2.200 (not to 10.2.300 because it has many changes in the calls of the methods and it was released just when we were finishing the revisions of the external programs with the 10.2.200, it was to start the review again)
At this moment we only have one Dll that is called from a BPM, it uses these epicor dlls.
Which is the downside of using DLLs for customizations. At your next upgrade, you may want to investigate whether you can leverage the REST functionality which is more resilient to breakage. Don’t get me wrong, eventually we will see changes in the the REST signatures too but it will be far less than you’re seeing with DLLs.