Return additional data (tranid) when add salesOrder?

Greetings,

When we add a SalesOrder via SuiteTalk, the returnXml (sample below) includes the internalId of the newly-created SalesOrder.  However, our integration that is calling this also need to know the Order ID value (field "tranid").  Is there a way I can also return this value?

We already have an existing SuiteScript After_Submit customization when a SalesOrder is inserted via SuiteTalk. While easy enough to get the tranid, I don't know how I can add this to the returnXml.  Any clues/suggestions are greatly appreciated.  As a work-around, I know I can have our integration make a subsequent SuiteTalk call to search for the SalesOrder and return this value, but this is extra work on both systems and an extra round-trip I'd rather avoid.