ECC 6.0 CAMS by MII integration ERROR Error reading C:/CAMS/SAP_CAMS_7.2_PI file couldn't open "C:/CAMS/SAP_CAMS_7.2_PI": permission denied

Each technical experts ECC 6.0 CAMS by MII integration, When send material data from ECC to Cams,ERROR Error reading C:/CAMS/SAP_CAMS_7.2_PI file couldn't open "C:/CAMS/SAP_CAMS_7.2_PI": permission denied。       Seee annex！       ECC6.0 EHP7    MII 15.0 SP4 FOR NETWAVER 7.4    CAMS 7.2.2  ON WINDOWS SERVER 2008 ORACLE 11G