Rewrite JobScheduler SOAP interface How To KB article

Rewrite existing SOAP how to KB article

As of today situation

1. Auto generated SOAP document from code is old and incompatalbe with current release.
2. There are multiple articles search KB with overlapping information

Required situation

1. Consolidate SOAP related document in categories e.g. How tos, Example or User guides
2. Remove deprecated features/functions
3. Clear use case of JobScheduler SOAP interface eg. synchronous and asynchronous SOAP requests