What payload types are you trying to send your partners?
Is it X12 or XML or flat files etc…??
Are you trying to send same payload transaction to multiple TP’s?
In TN each transaction set to one partner specific and you cannot send same transaction which is tied to one Receiver and TPA specific and unless you have mutiple trading partners defined and same transaction types being created for each TP you wanted to send there is no way you can let TN send same transaction payload to multiple TP’s.