SAP Function Module search on MDG_R

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MDG_READ_MDGI_SCKEY_GRPID - FM to read table MDGI_SCKEY_GRPID

MDG_REGISTER_MSG_CONTEXT - Registers a Context Object of a Message (for Subsequent Callbacks)

MDG_RETRIEVE_KNVK - Get KNVK entries by given PARNRs (RFC)

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