The URL template you've defined (in process ZHPL/Product Setup/Add new product/Enter details of new product/Save/Generate Data for Product List table/productid) is:
While it should actually be:
The differences being:
I presume you've used the Callable Service docs (http://www.tersus.com/#Id=3411) as a reference, and therefore I'd like to point out that these are quiet old docs and demos, and we have since made callable service references easier to construct.
Instead of using the cumbersome:
you can now use the simpler:
so your template could be as simple as:
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