Call Webservice from inside an ABAP program

Hi Experts,

I have a file which contains 100 rows of Service Order data.In each row, I have service order no. and post code.

Now I have to call a webservice ( WSDL and URL will be provided by 3rd Party)for each of these service order records passing order no. and post code to the web service and store the response in a z-table.

Can I achieve this by creating an ABAP program ?I will schedule the program as a background batch job.

Next ,  I need to create a second ABAP program which will take the value stored in z-table and update the service order. This program will also be scheduled as a background batch job and run after the completion of first program.

Therefore, my question is how to call webservice from inside  ABAP program?

Any step by step document will be of great help.

Thanks

Ayan