ISSUE at named_value Azure

Hello everyone,
Since yesterday I have been reporting an error in the creation of azurerm_api_management_named_value using terraform.
The error indicates that the value of display_name can only contain alphanumeric characters, but, if a named_value is created in Azure manually, this limitation does not exist, and furthermore, even if you only put characters in the value, the same error still occurs, even With the example taken from the official Terraform website it gives the same error.
azurerm_api_management_named_value | Resources | hashicorp/azurerm | Terraform | Terraform Registry
Has no sense. I attach screenshots of the failure.