This is my scenario that step call BDC to generate HU is successful. but call FM WS_DELIVERY_UPDATE to PGR failed. Error message is "No HUs have been transferred for material & & &". In the debug mode, I found the database VEKP&VEPO has exist HU data. But in the FM WS_DELIVERY_UPDATE, a sub-FM HU_GET_HUMSEG will check internal table GT_XVEKP & GT_XVEPO (empty internal table so that raise error message). Who knows about this scenario and solve solution? Thanks!