What is the name of the main program corresponding to function group ZATP?

The name of the main program corresponding to the function group ZATP is SAPLZATP. In SAP, function groups are collections of function modules, and each function group has a main program associated with it. The naming convention for these main programs is typically SAPL followed by the function group name. Therefore, for function group ZATP, the main program takes the form SAPL followed by ZATP, resulting in SAPLZATP.

This systematic naming structure aids in organization and clarity, enabling developers and users to understand which main program relates to which function group simply by looking at the naming patterns. Other choices do not follow this standard naming convention and thus do not correspond to the main program linked to the ZATP function group.