Printing using Post method of OData service

Hi,

In Ecc we have standard FM which is used to print data from SAP.

Now, You might think I is this to do with Gateway. Well, In my case I have developed my OData service with Post operation mapped to this Standard FM in Backend.

I've questions for you:

1. How to set default printer in case in am referring to table NAST for print.

If you faced similar issue/ found the solution, can you help.Image may be NSFW.
Clik here to view.

Concluding lines: How can we print from SAP... If there are other ways, would appreciate the workaround.

Thanking you.

Pavan G