Unable to file return due to R0000-500-01

My name is

First name : [PII Removed]

Last name : [PII Removed]

 

Since 20 characters limitations for last name. It wont accept while filling the form.

 

I tried following lastname during submission.

last name : [PII Removed] (20 characters)

lastname : [PII Removed]

 

Kindly help to provide resolution.