First of all you should have clear if you want to go to single or dual stack, i recommend to you to go to the single stack if you don't have complex ccBPM, however if you go to PO with the SAP NW BPM you won't have this problem.
You can think that PI 7,4 is like PI 7.31 but with 5 SP of difference, i mean a PI 7.4 SP 12 is like PI 7.31 SP 17, for example. Therefore you can find some thread with valuable suggestions:
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