Version: 

Not version-specific

Issue: 

All advance payments transactions done at POS are not reflected in SAP under AR Invoices.

Solution: 

Any transaction having only ARPayment flag true in TrxTransaction table in the store and HO databases (rest all marked zero) means it did not have a sale or any other transaction type associated with this transaction rather just advance payment is taken, and accordingly, there is no sale line for this transaction in SaleItem table. So this is the system by design that such Transactions get synced in SAP under Incoming Payment section and as per type of transaction this will not be visible in ARInvoice screen rather just will be visible under Incoming payment screen only.

Below is the screenshot where we can see how advance payment can be taken from POS.

Go to POS >> Select Transaction Mode >> Advance Payment >> Take payment >> Wait to replicate the records to Enterprise >> Wait to integrate the records to SAP B1 >> Search the Transaction at Incoming Payment Screen

Above is the process which explains about advance payment transactions and impact in SAP.