how to import OTM planned shipment which contain multiple order within it

Hi Team,

Our client has a requirement that they want to merge multiple orders into single planned in OTM.

We are able to generate one planned shipment from OTM but while importing the same into base table using Receive Shipment Request then we are getting error " The request cannot be processed because the sales order or sales order line does not exist." Kindly let us know how we can achieve this.