FMCA_GET_EXPRESSION_METHOD is a standard SAP function module that performs Get customizing: Assignment of static methods to expression type functionality. This is available within standard R/3 SAP systems depending on version and release level.
Below are the pattern details for this FM showing its interface including any import, export and tables parameters. There is also a list of Exceptions and for your convenience any standard documentation available. All this information and more can also be viewed if you enter the function module name FMCA_GET_EXPRESSION_METHOD into the relevant SAP transaction such as SE37 or SE80.
CALL FUNCTION 'FMCA_GET_EXPRESSION_METHOD' "Get customizing: Assignment of static methods to expression type
IMPORTING
es_expression_name = " tfmca_exp_meth BRFplus: Assign static methods to expression type
. " FMCA_GET_EXPRESSION_METHOD