Returns a JSON object with the changes since the dataset version identified by the session and serial query parameters. If a delta cannot be produced from that version, the full data set is returned and the ‘reset’ field will be true.
Session ID from a previous response
"a1b2c3d4"
Serial number from a previous response
42
Successful response with delta or full dataset
Session ID of the current dataset
"a1b2c3d4"
Serial number of the current dataset
43
If true, this is a full dataset rather than a delta. The 'withdrawn' field will not be present.
false
Route origins that have been announced since the previous version
Route origins that have been withdrawn since the previous version. Not present when reset is true.