EXPERT RESPONSE
Like any other project, implementing SAP CRM happens in phases. The general phases are:
1) Project planning
2) Blueprinting
3) Realization
4) Final preparation (Business validation, quality assurance (Q/A))
5) Go live and support
So the typical system landscape for SAP CRM, at the minimum, are:
1) Development system
2) Q/A system
3) Production system
Large and complex projects may have a sandbox system before the development system and a training system also:
1) Sandbox system
2) Development system
3a) Q/A system
3b) Training system
3c) Production system
The implementation team completes the construction of the application as per business requirements evolved in the blueprinting phase. Unit testing of application is done within the development system. Applications and programs that are successful after the unit testing will be transported to Q/A system. The business super users and key users will do the end-to-end integration testing of the applications. The results of such testing will then be documented in an issue tracking system with the issue number, issue, issue description, application, issue priority (critical, high, medium and low) created by, created date, responsible owner, resolved date. The responsible owner will be notified via email whenever an issue is recorded in the issue tracking system. The owner of the issue will look into the issue and update the issue with the solution, resolved date. The responsible owner transports the changes from development to the QA system and notifies the person who created the issue. The tester will test the application and either closes the issue or report if any further issues noticed.
This continues until the application is robust and "bug free" from both functional and technical aspects. The successful application will be transported from development to training system for end user training and finally to the production system.
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