How do you find max length for reference fields?

[OKayKay]

Hi, I am new to ServiceNow and trying to navigate my way to build reports. I had a quick question about max length for reference fields. I know it will always be 32 for reference type fields, but there is a way to look at backend and find a 'true' max length for these fields. Can anyone show me how I can get to that page?

Thanks in advance!

[JaishreeR]

Hi @OKayKay 

First of all welcome to the servicenow world.

Coming to your question - For example , let's find the true length of caller field in incident table. The caller field is referencing the user table , hence go to the user table --> show schema map and in the columns select Name --> you will find the true length.

Screenshot attached