To review, database identifiers, field names, and product codes (database keys) are restricted in the characters they may use. A short table showing restrictions:
Legal characters
---------------------
Database identifiers A-Z a-z 0-9 _
Field names A-Z a-z 0-9 _
Database keys (product code/SKU) A-Z a-z 0-9 _ # - . /
Database values Any (subject to field/record delimiter)
Some SQL databases have reserved words which cannot be used as field names; MiniVend databases do not have this restriction.
For easy HTML compatibility, is not recommended that you use a / in a part number if you wish to use the flypage capability; you can still call it with [page href=flypage arg=``S/KU''] if you do happen to use it.