Overview

Allowed characters

Client supplied FIX identifier field values must contain between at least one and up to one hundred allowed characters.

Any exchange-bound message containing an invalid identifier will be rejected.

Client supplied identifier values should match against this PCRE regular expression:
[:\-_\.#a-zA-Z0-9]{1,100}

Characters	Description	ASCII Codes (Dec)
`A-Z`	Uppercase letters A through Z	65 – 90
`a-z`	Lowercase letters a through z	97 – 122
`0-9`	Digits	48 – 57
`#`	Hash, octothorpe, number sign	35
`-`	Hyphen	45
`.`	Period	46
`:`	Colon	58
`_`	Underscore	95