### Terraform Version ```shell Terraform v1.15.0-alpha20251203 ``` ### Terraform Configuration Files ```terraform ephemeral "foxcon_schema_credentials" "test" {} action "foxcon_set_subject_mode" "ro" { config { subject_name = var.subject_name mode = "READONLY" rest_endpoint = ephemeral.foxcon_schema_credentials.test.rest_endpoint } } ``` ### Debug Output ``` ╷ │ Error: WriteOnly Attribute Not Allowed │ │ with action.foxcon_set_subject_mode.ro, │ on main.tf line 114, in action "foxcon_set_subject_mode" "ro": │ 114: rest_endpoint = ephemeral.foxcon_schema_credentials.test.rest_endpoint │ │ The resource contains a non-null value for WriteOnly attribute rest_endpoint. Write-only attributes are only supported in Terraform 1.11 and later. ╵ ``` ### Expected Behavior I was expecting to be able to use ephemeral resources attribute in action since action`s attribute is Write-Only. Terraform versions is the latest available. ### Actual Behavior I am getting a weird error saying I should be using terraform 1.11 or later. ### Steps to Reproduce 1. Create an action with Write-Only attributes 2. Configure the write-only attribute with output from ephemeral resource 3. Run terraform plan ### Additional Context ATM it is not possible to set sensitive parameter for an action attribute. I am trying to use ephemeral resource output with actions having write-only attribute. action schema: ```go func (a *subjectModeAction) Schema(ctx context.Context, req action.SchemaRequest, resp *action.SchemaResponse) { resp.Schema = schema.Schema{ Attributes: map[string]schema.Attribute{ "rest_endpoint": schema.StringAttribute{ Optional: true, WriteOnly: true, Description: "Schema registry rest endpoint", }, "subject_name": schema.StringAttribute{ Required: true, Description: "Name of the subject", }, "mode": schema.StringAttribute{ Required: true, Description: "Subject mode", }, }, Blocks: map[string]schema.Block{ "credentials": schema.SingleNestedBlock{ Attributes: map[string]schema.Attribute{ "key": schema.StringAttribute{ Optional: true, WriteOnly: true, }, "secret": schema.StringAttribute{ Optional: true, WriteOnly: true, }, }, }, }, } } ``` As soon as I set a value to the `rest_endpoint` terraform starts to fail with the below error: ``` The resource contains a non-null value for WriteOnly attribute rest_endpoint. Write-only attributes are only supported in Terraform 1.11 and later. ``` ### References _No response_ ### Generative AI / LLM assisted development? N/A