Checklist Descriptive flexfield what is the number of attributes in each context?

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Checklist Descriptive flexfield what is the number of attributes in each context?

Content

Hi,

For the on boarding checklists, im using the 'Configurable Form' - and go to 'Manage Checklist Descriptive Flexfiled'
for each context - how many attributes can be added ? (see screenshot in red - the attributes- how many can we add? ,what is the limit)

see attached file .

Thanks 
Revital