Error: 400: on Salesforce HTTP request

URL: https://tilth.my.salesforce.com/services/data/v50.0/sobjects/Web_Ticket__c/a1g3q000006R5CTAA0

Message: Attendee Medical Conditions: data value too large: Yes. Declan has some disabilities. He has had multiple brain surgeries due to past brain surgery. He does not have function in his left hand and both of his eyes are blind on the left half. He accommodates well, but will need help for tasks needing two hands. (max length=255)

Code: 400