How to implement Queuing of WebService call.

Question

I have to implement a queuing mechanism for webservice.
The scenario is like a user will invoke the client from his sytem(name:A), this webservice call is received by a server (name:B).
The webservice will internally call a third system(name:C) , but only one instance or only one call to System C is allowed.
So system B can get any number of webservice calls but can only invoke system C one at a time.
The webservice has to be a sync webservice.
Any help forthese issue is highly appreciated.

Answer 1

Hi Anton,
In WD ABAP, if we want to reimport the service call, we need to follow the same steps which we follow to create a service call.
One thing to notice is that wizard does not allow to give the same method name which we gave/system proposed during the last time service call creation. Hence in the second time when we reimport the service call provide all details and new method name. A new method will be created in Controller (if we use existing controller). During adapting the nodes new nodes/attributes will be created.
Hence the best approach is to before reimporting the service call is to delete the context, attributes and the method created during the previous service call creation.
Best regards,
Suresh