TermGroup, TermSet, name and label max length

Question

I was wondering what the max. length restrictions are for SharePoint Online Managed Metadata Service: - TermGroup name - TermSet name - Term/Label name/value

I could not find anything on MSDN. A link to a source or reference would be fantastic, too.

Answer 1

I did a quick test and it seems TermGroup, TermSet and the Term have 255 character limit:

I don't think it is documented

Answer 2

A note in the dot net doc's for the Label (value) matches the findings from @SharePointer

The Label can not have more than 255 characters, and cannot contain any invalid characters including: semicolon, double quote, left angle bracket, right angle bracket, ampersand, pipe, and tab.

https://docs.microsoft.com/en-us/dotnet/api/microsoft.sharepoint.taxonomy.label.value?view=sharepoint-server#exceptions

Similar results are available for the other wonderings:

https://www.google.com/search?q=SharePoint.Taxonomy+255+site%3Adocs.microsoft.com