You are using a networking module in your Terraform configuration with the name label my- network. In your main configuration you have the following code: When you run terraform validate, you get…

The correct answer is C. Define the attribute vnet_id as an output in the networking module. To expose a value from a child module to its caller, the value must be explicitly declared as an output in that module. The correct reference syntax is module.<module_name>.<output_name> (e.g., module.my-network.vnet_id). Simply declaring a variable inside the module is not…

Submitted by akirajp· Apr 18, 2026Work with Terraform Modules

Question

You are using a networking module in your Terraform configuration with the name label my- network. In your main configuration you have the following code: When you run terraform validate, you get the following error: What must you do to successfully retrieve this value from your networking module?

Exhibit

Options

AChange the reference value to my-network,outputs,vmet_id
BDefine the attribute vmet_id as a variable in the networking modeule
CDefine the attribute vnet_id as an output in the networking module
DChange the reference value module.my,network,outputs,vnet_id

How the community answered

(41 responses)

A
2% (1)
B
2% (1)
C
88% (36)
D
7% (3)

Explanation

To expose a value from a child module to its caller, the value must be explicitly declared as an output in that module. The correct reference syntax is module.<module_name>.<output_name> (e.g., module.my-network.vnet_id). Simply declaring a variable inside the module is not sufficient - outputs act as the module's public interface. Without an output declaration, Terraform cannot resolve the reference and will throw a validation error.

Topics

#Terraform Modules#Module Outputs#Module Communication#Error Resolution

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