When we create and update of agent, customer, group, and team option form postman api side then should be shown a validation for special characters

[komal-sh-27]

Description
When we create and update of agent, customer, group, and team option form postman api side then should be shown a validation for special characters

How to reproduce
Step 1: When we create a new or update an agent, customer, group, and team field then if we using some special characters in firstname and lastname, name, description field then created or updated successfully from the postman api side instead of warning:

Step 2: Now checked on the same from the admin dashboard then here showing a warning like this:

Possible Solution
If we created a new agent, customer, group, team form postman api side then should be shown a warning like admin panel

This field must have characters only
This field must be a number