Do we have any documentation which provides size limit for all field types in JIRA Core?

Question

I would like to know the size limit for the following field types in JIRA. I searched in Atlassian document and could not find the same and hence seek your support on the same.

Select List
Text Field
Number Field
Scripted Field
Select List(cascading)
Select List(multiple choices)
Select List(Single choice)
Text Field(multi-line)
Text Field(read only)
Text Field(single line)
URL Field
User Picker(multiple users)
User Picker(single user)
Version Picker(multiple versions)
Version Picker(single version)
Color of Epic
Labels
Project Picker (single project)
Global Rank
JIRA Released Version History
Remote System Reference
Remote Object Link
Multi Remote Object Link

Regards,

Neha

Timothy · Answer

If you look into the fieldtype-xxx.xml in your WEB-INF/classes, you'll be able to make a good guesstimate for those values.

Text fields are normally 255, 60 or 10

Numbers are normally 18,6 or 18,2

There is also java.sql.Date and java.sql.Time