Impact of just parking invoice doc, but not posting???

Question

I would like to know the risk/constrain involved with the below process, which may not be a standard practice.
1. Service Provider maintains Classic SRM/ECC. Customer maintains own ECC.
2. Shopping cart created in SRM and PO generated in ECC of Service provider.
3. PO transferred to Customer ECC. Invoice posting, Payment and FI activities are carried out in customer ECC.
4. Basic Invoice Information is transferred back to Service provider ECC, so this invoice will be shown as follow on document in the shopping cart. It will show only the invoice number and it is only for the informational purpose. There is neither finance activity nor any reporting are made out that system.
Service provider just want to Park the document and not to post it, so it won't hit the GL account. This eliminates considerable work FI configuration settings.
Question is whether this unorthodox method of just parking, but not posting will cause any impact/risk, even though no FI activities is carried on that system.

Answer 1

It is not a normal practice and does not fulfill the intent of the park process but as long as you have controls around preventing those parked documents from being posted this should probably work.
Consider them to be a little akin to delivery accruals that are never matched to an invoice, my thoughts are you might want to HOLD rather than PARK these documents.
You will also need to consider what your long term housekeeping and archiving strategy will be for these essentially orphaned documents.