Adapter PLAINHTTP cannot process message packages

Hi Experts,

my scenario is IDOC--->PI--->Http, based on condition message split in target side.

1.I am not using multiple receiver in target side. here using only one receiver and get two messages.

2.does plane http adapter can handle message splinting  in receiver side? if yes please provide any documentation or possible solution.

3.I checked Multi-Mapping without BPM - Yes, it’s possible! 
document. i dont have standard and extended option  in my interface determination.

could please tel me is there any possible way  to resolve this.

regards,

Sruthi