It is an alphanumeric reference number with five or six characters (e.g.: 1LYMØ9). It is also known as Track-ID.
You can find it on the notification card that the delivery driver left in your letter box.
You might also have received an e-mail/SMS containing the number, in the case that we could not deliver your parcel (e.g. because of an incorrect address).
You can authorise GLS to leave the parcel at an agreed place, for example in your garage. Simply download the residential drop-off authorisation, print it out, fill it in and follow the written instructions, or hand it directly to the GLS delivery driver.
This residential drop-off authorisation can be a once-off or generally. You may also revoke it at any time by submitting a request to us.