we are Zoho CRM user, im trying to make a new custom field in potentials, custom type i'm selecting is string and it gives me following error

For the String type custom fields (which includes Text, Pick list, Multi-select Pick list, Email, Phone and URL fields)
you can create a maximum of 50 fields for Potentials.

i have created custom form with custom field and i need this to make other new fields.

can someone guide me how i can get rid of this error?

thanks

Swapnil