On the test environment the ID should start with a unique ID formatted in 6 digits left padded with zeros, followed by a string of digits (up to 54 digits) and ending in “-1”. To retrieve this unique ID you will need to use the create command with a random ID and the subsequent error message will tell you the correct format.
On the production environment the ID should start with the provided User-id (without the "u" )formatted in 6 digits left padded with zeros, followed by a string of digits (up to 54 digits) and ending in “-1”.