To improve synchronization and cms 1C Bitrix

Good day!

There is a website (online store)
You need to improve the integration that already exists between the 1C and cms Bitirx, namely in the formation of the account on the website. The website marks an incorrect account number, excluding the 1S, it should be correct

In more detail, the task described in the TOR
All required accesses would send in a PM.