Customer shipTo bill to fields not retreived in REST -Get call

Summary:

Hello

We are trying to get transaction header information through REST get call, but the customer ship to & bill to fields are not retreived in the response.

Getting only few fields from header.

Missing any setting ? Below is the api i am using.

/rest/v18/commerceDocumentsABCProcessTransaction?q={transactionName_t:'SFDC'}

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