SAP INPUT PARAMETER GLOSRY documentation, setup help and example usage

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input parameter
Formal parameter of a procedure , to which the value of an actual parameter is passed at the time of a call and which is evaluated in the procedure. Input parameters for which the pass by reference is defined cannot be succeeded by a write access in the procedure. Input parameters are defined for methods and function modules using IMPORTING
. Therefore, they are also called IMPORTING parameters. For subroutines , input parameters are defined using USING . They are not protected against a write access during the pass by reference.