arcpy.env.workspace= r"C:\Pipeline.gdb"
in_dataset = "PTMS_Add"
in_target_event = "LRSE_PTMS"
field_mapping = r'AADT "AADT" true true false 4 Long 0 0,First,#,C:\Pipeline.gdb\LRS\PTMS_Add,AADT,-1,-1;YEAR_ "YEAR_" true true false 2 Short 0 0,First,#,C:\Pipeline.gdb\LRS\PTMS_Add,YEAR_,-1,-1;Cosite "Cosite" true true false 6 Text 0 0,First,#,C:\Pipeline.gdb\LRS\PTMS_Add,Cosite,0,6;Classd "Classd" true true false 3 Text 0 0,First,#,C:\Pipeline.gdb\LRS\PTMS_Add,Classd,0,3;SECTION_ "SECTION_" true true false 8 Text 0 0,First,#,C:\Pipeline.gdb\LRS\PTMS_Add,SECTION_,0,8;COMM "COMM" true true false 254 Text 0 0,First,#,C:\Pipeline.gdb\LRS\PTMS_Add,COMM,0,254;Active "Active" true true false 1 Text 0 0,First,#,C:\Pipeline.gdb\LRS\PTMS_Add,Active,0,1;Sitetype "Sitetype" true true false 11 Text 0 0,First,#,C:\Pipeline.gdb\LRS\PTMS_Add,Sitetype,0,11;KFCTR "KFCTR" true true false 8 Double 0 0,First,#,C:\Pipeline.gdb\LRS\PTMS_Add,KFCTR,-1,-1;DFCTR "DFCTR" true true false 8 Double 0 0,First,#,C:\Pipeline.gdb\LRS\PTMS_Add,DFCTR,-1,-1;TFCTR "TFCTR" true true false 8 Double 0 0,First,#,C:\Pipeline.gdb\LRS\PTMS_Add,TFCTR,-1,-1;LOCATION "LOCATION" true true false 8 Double 0 0,First,#,C:\Pipeline.gdb\LRS\PTMS_Add,LOCATION,-1,-1;FromDate "FromDate" true true false 8 Date 0 0,First,#,C:\Pipeline.gdb\LRS\PTMS_Add,FromDate,-1,-1;ToDate "ToDate" true true false 8 Date 0 0,First,#,C:\Pipeline.gdb\LRS\PTMS_Add,ToDate,-1,-1;EventID "EventID" true true false 50 Text 0 0,First,#,C:\Pipeline.gdb\LRS\PTMS_Add,EventID,0,50;RouteName "RouteName" true true false 255 Text 0 0,First,#,C:\Pipeline.gdb\LRS\PTMS_Add,RouteName,0,255'
load_type = "ADD"
generate_event_ids = "NO_GENERATE_EVENT_IDS"
generate_shapes = "GENERATE_SHAPES"
arcpy.locref.AppendEvents(in_dataset, in_target_event, field_mapping, load_type, generate_event_ids, generate_shapes)