How to verify and understand the structure of an envelope ID or other System ID

Issue

I suspect there is an error in an envelope ID / Document ID, API Account ID, or API User ID that was provided to me.

Solution

There is a structure of 8, 4, 4, 4, 12 characters separated by 4 dashes
That is a total of 36 characters in length, including the 4 dashes
A valid ID contains only the characters 0-9 and A-F (hexadecimal characters)

Example One - A missing dash

f3446bd3-781f-463a-8cd8-2eb1a01138f0
f3446bd3-781f-463a-8cd82eb1a01138f0


Example Two - Too many digits

f3446bd3-781f-463a-8cd8-2eb1a01138f0
9244febb-8c94-4qa8-811f-5f1ae24c45799999
 
Example Three - Contains letters other than A through F, most notably the letter O

f3446bd3-781f-463a-8cd8-2eb1a01138f0
f3446bd3-7Q1f-463a-8cd8-2eb1aO1138f0

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