Mandatory custom field can not be in a profile/permission set

Detection

• RegExp: Error (.*) You cannot deploy to a required field: (.*)

Resolution

- Search for {2} in source file XML of {1}, then remove the entries matching the results
Example of element to delete:
<fieldPermissions>
  <editable>true</editable>
  <field>{2}</field>
  <readable>true</readable>
</fieldPermissions>