Multiple Webservice Call in one PI interface

Hello Experts,

I am looking at an interface with the following requirement.

I need to do a Webservice call on to a server A from PI and if I get the required data, the interface is complete.

But if the required data is not present in server A, the same interface will then do a call to another server with another or same webservice.

Actually the required data will be present in one of the server, so if the first call fails, then the second one is called.

Can I do this without using BPM.

I am using PI 7.31 Single Stack PO.

Thanks & Regards,

MM