Help needed selecting module for a QA guy.

Hi guys,

My friend has close to seven years of domain experience in Quality Assurance relevant to Process definition(tailoring), training, implementation and conducting audits by supporting the following verticals - Financial Services, System Software, Semi, Information Management, Aerospace, Automotive, CAD, Application related projects and support functions (like Procurement, HR and Training, System Administration)

He has worked for companies like HCL, Capgemini and EDS.

He wants to change his career track and come into SAP. He has been getting ambiguous suggestions and advises from authorised training centres and others on selecting the module. He has been advised to take up SD / MM / QM / PS. Could anyone please advise which module he would fit into.

Thanks in advance.

Zubair