Looks up Fastway label numbers for a given Temando requestID.
RequestID - The requestID to look up.
{ 'result': [ 'TK0000000010', 'TK0000000011' ], 'generated_in': '13ms' }
https://api.fastway.org/v3/tracktrace/temandolookup/253819?api_key=YOUR_API_KEY