Setting a Policy type Custom Field by label fails

[Saadi6]

Environment

Operating System: any
VenafiPS version: 4.6.0
PowerShell version: 5.1+
TPP version (if applicable): 21.4

Steps to reproduce

Reading a Custom Field using its label works, however, setting the value by label returns an error when this custom field can be controlled by Policy. You can still set the value for such a custom field by its' guid.

Custom fields that are not policy enabled can be set by their label.

PS /Users/saad.humayun> Set-TppAttribute -Path '\VED\Policy\Certificates\Teams\New team' -Policy -ClassName 'x509 certificate' -Attribute @{'SNow_number'='CI45332'}
Set-TppAttribute: Write policy for "x509 certificate:SNow_number"; "\VED\Policy\Certificates\Teams\New team" CacheEntryNotFound.

Set value for non-policy custom field by label works.

PS /Users/saad.humayun> Set-TppAttribute -Path '\VED\Policy\Certificates\Teams\New team\test cert' -Attribute @{'Application Id'='My App 23'}

Expected behavior

Since reading work by label, so should writing.

Actual behavior

An error is returned.

More Info

If the provided custom field label conflicts with a built-in attribute then an error can be returned. Alternatively, please add an optional switch in the function to explicitly state the passed attribute is a custom field.