# Problem: Configuration file issue
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## Resolution
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It is critical that the configuration files follow the property conventions defined. For more details, refer to the [configuration reference](https://awslabs.github.io/landing-zone-accelerator-on-aws/latest/user-guide/config/) in our [GitHub Pages website](https://awslabs.github.io/landing-zone-accelerator-on-aws/). Deviations cause an error during the **Build** stage of the pipeline. During this stage, type validation of the configuration files occurs, and variances cause the pipeline to fail.