Confuse on PR & PO data migration approach new to MM module

Question

Hi All,
I'm pretty confuse with the PO data migration approach when it comes to PO is GR or partial GR or GR&IR. I'm hoping that someone can enlighten me. i understand that we typically don't migrate PO when it is GR & IR, FI team usually will bring over to the new system as an vendor open item in AP. How about the PR or PO which have gone through or half release strategy? What is the follow up process?  I have created a criteria table below. How Could someone point me in the right direction? Thanks in advance.
PR
Criteria
Data migration required
Notes
Open and Released
Y
Open and not Released
Y
Flag for Deletion
N
Flag for Block
Y
PO
Criteria
Data migration required
Notes
Open and Released
Y
Open and not Released
Y
GR but no IR
GR & IR
N
AP will bring over as open item
Flag for Deletion
N
Flag for Block
Y
Partial
Y
For partial GR to recreate PO only with missing GR quantity
Regards,
John

Answer 1

Hi John,
The approach that i have followed recently is that we have considered PO as the base document and converted other documents based on the PO condition. This means you first need to see if the PO is to be converted or not. Then you can proceed to convert the related documents like PR, Agreement, Info record, Source list, etc.
Also open qty for PO should be considered for Material and Service line items both.
Once a GR/SES is created, it gets updated in the PO history table EKBE with its related transaction/event type.i.e. EKBE-VGABE = 1 for GR and 9 for SES. Quantity and value also gets updated in case of material and services. You can compare this consumed quantities with PO quantity.
Please see below from SCN and let me know if you need more info on PR or PO conversion.
Purchase Requisition Conversion Strategy
Thanks,
Akash