How to send the HL7 Batch messages over a SOAP webservice which takes 3 credentials(Username, Password& Org.ID) using IRIS Management Portal

How to send the HL7 Batch messages over a SOAP webservice which takes 3 credentials(Username, Password& Org.ID) using IRIS Management Portal V 2019.1?

WSDL   xsd : element - 1.Username , 2.Password ,3.Org.ID ,4.HL7 Message.

Info I had -  

Source is CSV File will be translated to HL7 using data Transformations. All the transformed messages need to be sent to destination System through SOAP request as a single Batch File.

Challenge faced was - How to send the request message (Message Structure asked : Username , Password, Org.ID and HL7 message )in batch transformation. - I can add the username &password as credentials under management portal. but not able find where to add the Ord. Id field to the message? 

How to send the all HL7 messages as a batch?

How to send the data in the provided structure?

Appreciate your Help!!!