How can this Business scenerio be mapped in SAP

Hi,

Company creates an Annual Maintenance Contract (AMC) for a material or Service.

Say it is for a Material (Eg: A/c).

Company enters into an AMC with their customer stating that only 4 free services will be rendered against AMC and from there on, the extra services performed will be on chargeable basis against the AMC.

Regards,

K S Srinivas Reddy