SAP NetWeaver AS ABAP Release 750, ©Copyright 2016 SAP AG. All rights reserved.ABAP - Keyword Documentation → ABAP - Reference → Calling and leaving program units → Calling Processing Blocks → Calling Procedures → CALL FUNCTION →
CALL FUNCTION func
This statement calls the function module specified in func. The name func must be a character-like data object containing the name of a function module permitted by the package check in uppercase letters when the statement is executed. Each function module in AS ABAP has a unique name, which is why do not need to specify the function group. The following can be specified for func:
When the statement is executed, func is not evaluated until runtime (in both cases). More specifically, the types of the parameters are not known until runtime.
The additions parameter_list or parameter_tables are used to assign (statically or dynamically) actual parameters to the formal parameters of the function module and return codes to the non-class-based exceptions.
If the name of a program unit is specified dynamically when it is called, and this name is passed to
a program from outside, the result is a serious security risk. Any names passed to a program from outside
must be checked thoroughly before being used in calls. The system class CL_ABAP_DYN_PRG, for example, can be used to do this. See