How can I resolve the "INVALID_DATA" details = "maximum_length":255 "error?

How can I resolve the "INVALID_DATA" details = "maximum_length":255 "error?

In the backend I am sending request to Zoho Crm through different forms. I get an error on some after this request.
This error is as follows "{"code":"INVALID_DATA","details":{"maximum_length":255,"api_name":"Website_Url"} ".
When I looked at the website url where this error originated, I saw that it has 288 characters. This made me understand why the error occurred. How can I fix this error? Do I need to make an improvement in our back - end application or do I need to make an adjustment in the crm application ?