How do I specify the sales order numbering for orders created against service requests?

You can control how sequence numbers are generated for sales orders created from service requests by setting the profile option, Retain Sales Order Number for Orchestration Order Number (DOO_RT_USE_ORDER_NUMBER).

If this profile option is set to Yes, then the sales order numbers are the same as the service request numbers. If this profile option is set to No, then the sales order numbers are generated by Order Management.