Fiori ODATA Service URL

Dear All,

We have developed a custom Fiori App.

The respective URL that connects to our Developmetn system is like this

http://xx.xx.xx.xx:8000/sap/opu/odata/sap/ZHCM_EMP_MREQ_SRV/requestSet

It is working fine

But, When I transport it to QAS or PRD, I need to change the port from 8000 to 8002 for QAS, 8004 for PRD.

So, I need to change it in dev system and transport it to appropriate server.

How I can achieve this without doing so, what changes i should put in SAPUI5 so that the base url will automatically picks up

Kindly give me a help/direction.

Regards,

Venkat