UPARU_VALID_IOBJMDIO is a standard SAP function module that performs Validation of a mapped Info Object 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 UPARU_VALID_IOBJMDIO into the relevant SAP transaction such as SE37 or SE80.
CALL FUNCTION 'UPARU_VALID_IOBJMDIO' "Validation of a mapped Info Object
EXPORTING
iobjname = " upc_y_chanm Characteristic
iobjmdio = " uparu_y_mdionm Master Data InfoObject
area = " upc_y_area Planning Area
. " UPARU_VALID_IOBJMDIO