Valid delivery keys
Delivery keys must be between 1 and 150 characters in length
Delivery keys must not:
- contain invalid characters.
- start or end with "/".
- contain spaces.
Delivery keys can contain the following alphanumeric characters: a to z, A to Z and 0 to 9. You can also include "-" and "_" and "/" as long as it is not included at the start or end of the key.
If the delivery key contains invalid characters, then a warning message will be displayed.