If you receive an error similar to this:
EDI Syntax – Seg [11] Err [18] Elm/Comp [3/] Err
This usually means there is a Control Character that Customs does not accept. Characters such as {, – \ etc…
Simply remove these characters and resend your entry.
EDI Syntax – Seg [24] Err [18] Elm/Comp [3/1] Err [13]
The entry is missing the ABN/CCID value.
You can also report this to GMA Support who can also assist you