Hi Thanga,
I want to thank you for your answers,your answers helped me a lot.
Please I would like to know if you can help me with this issue.
I want to develop an application web with .Net or perhaps also can be in Java, the point is that this application will be used by people who are in charge to approve some orders.
Here in the company where I work, first with trx me51n create a request for buying a material, this request is approved by the manager, then an order is created with trx me21n , which is approved by other managers.
Is there a way to develop an application web that calls a web service in SAP so that people can approve this request and orders through an application web without to log in to SAP GUI?
Thanks so much for sharing your knowledge