Unexpected Behaviour of "cannot convert to String" error message

[GW1708]

This error message appears 4 times for the attached aas json model:
"cannot convert to String ..."
Example_AAS_Final.json

• date_of_manufacture - Cannot convert to string: valueType must be xs:string
  There is no "date_of_manufacture" in the model but "DateOfManufacture". Here valueType is xs:date for value "2024-08-01". This cannot be changed because it is specified by submodel template. If changed from xs:date to xs:string the error is resolved for the validation tool.
• firmware_version - Cannot convert to string: must be a Property
  There is no firmware_version but FirmwareVersion. Here there is no valueType but model type multi language property. This cannot be changed because it is specified by submodel template and metamodel.
• hardware_version - Cannot convert to string: must be a Property
  see above
• software_version - Cannot convert to string: must be a Property
  see above

It is not possible to resolve the first error message without breaking the specification, and unclear how to resolve the error message for the latter three cases.

[otto-ifak]

Thanks @GW1708 for your feedback. You are right, the fields are implemented wrong.
After fixing, I still get some errors for the file you provided:

Check
   Check meta model
   Check constraints
   Check submodel '0cb33d20-8378-44e7-8402-84823c4b51dd'
      Template: DigitalNameplate (https://admin-shell.io/zvei/nameplate/2/0/Nameplate)
      'CEO' is not a valid RoleOfContactPerson @ /ContactInformation/RoleOfContactPerson
      Cannot convert to lang string: no value @ /ContactInformation/Email/PublicKey
      Cannot convert to lang string: no value @ /ContactInformation/Email/TypeOfPublicKey
      Cannot convert to lang string: no value @ /ContactInformation/MiddleName
      Cannot convert to lang string: no value @ /ContactInformation/Title
      Cannot convert to lang string: no value @ /ContactInformation/FurtherDetailsOfContact

Are these errors as expected?

[otto-ifak]

(addressed in a355091)