Order created but not in database

Greetings,

Recently we upgraded to ECC EHP7 on production landscape and are noticing an issue with order creation via a custom program calling standard SAP code.

We have a situation where an order number is consumed. An order shows as created by the API BAPI_SALESORDER_CREATEFROMDAT2.

The order shows as locked. But the order never actually gets written to the database.

Problem Workflow:           

Orders are submitted via RFC from an external source to SAP. This is an

issue that occurs on rare occasions. It happened previously in EHP4 and

now appears to be happening in EHP7 as well.

Any ideas on how I can got about troubleshooting this issue?