azuread_application_identifier_uri parsing error for hostnames exactly 10 characters long

[bwrogo]

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Terraform (and AzureAD Provider) Version

terraform 1.7.4

Affected Resource(s)

• hashicorp/terraform-provider-azuread
• azuread_application_identifier_uri

Terraform Configuration Files

  resource "azuread_application_registration" "example" {
    display_name = "test_saml_application"
  }
  
  resource "azuread_application_identifier_uri" "example" {
    application_id = azuread_application_registration.example.id
    identifier_uri = "https://methenwegoyouuse.mywebsit.net/some-thing/auth/saml-endpoint.cgi?p=sp4"
  }

Debug Output

  �[0m�[1m�[31mPlanning failed.�[0m�[1m Terraform encountered an error while generating this plan.�[0m

  �[0m�[31m╷�[0m�[0m
  �[31m│�[0m �[0m�[1m�[31mError: �[0m�[0m�[1mparsing "/applications/{redacted_saml_app_id}/identifierUris/aHR0cHM6Ly9tZXRoZW53ZWdveW91dXNlLm15d2Vic2l0Lm5ldC9zb21lLXRoaW5nL2F1dGgvc2FtbC1lbmRwb2ludC5jZ2k/cD1zcDQ=": unexpected segment "cD1zcDQ=" present at the end of the URI (input "/applications/{redacted_saml_app_id}/identifierUris/aHR0cHM6Ly9tZXRoZW53ZWdveW91dXNlLm15d2Vic2l0Lm5ldC9zb21lLXRoaW5nL2F1dGgvc2FtbC1lbmRwb2ludC5jZ2k/cD1zcDQ=")�[0m
  �[31m│�[0m �[0m
  �[31m│�[0m �[0m�[0m  with azuread_application_identifier_uri.example,
  �[31m│�[0m �[0m  on main.tf line 18, in resource "azuread_application_identifier_uri" "example":
  �[31m│�[0m �[0m  18: resource "azuread_application_identifier_uri" "example" �[4m{�[0m�[0m
  �[31m│�[0m �[0m
  �[31m│�[0m �[0mparsing
  �[31m│�[0m �[0m"/applications/{redacted_saml_app_id}/identifierUris/aHR0cHM6Ly9tZXRoZW53ZWdveW91dXNlLm15d2Vic2l0Lm5ldC9zb21lLXRoaW5nL2F1dGgvc2FtbC1lbmRwb2ludC5jZ2k/cD1zcDQ=":
  �[31m│�[0m �[0munexpected segment "cD1zcDQ=" present at the end of the URI (input
  �[31m│�[0m �[0m"/applications/{redacted_saml_app_id}/identifierUris/aHR0cHM6Ly9tZXRoZW53ZWdveW91dXNlLm15d2Vic2l0Lm5ldC9zb21lLXRoaW5nL2F1dGgvc2FtbC1lbmRwb2ludC5jZ2k/cD1zcDQ=")
  �[31m╵�[0m�[0m

Panic Output

Expected Behavior

The Identifier URI should be registered correctly in Azure Entra ID.

Actual Behavior

The encoding of a 10 character host name is generating a forward slash / which causes a parsing error.

Steps to Reproduce

1. terraform apply

Important Factoids

References

Is it possible that the encoding in the provider code is being done through StdEncoding vs URLEncoding?