# TFNFR21 - Discourage Nullability by Default Module Specification for the Azure Verified Modules (AVM) program ID: TFNFR21 - Category: Code Style - Discourage Nullability by Default nullable = true MUST be avoided. --- Source: https://raw.githubusercontent.com/Azure/Azure-Verified-Modules/refs/heads/main/docs/content/specs-defs/includes/terraform/shared/non-functional/TFNFR21.md Last Modified: 0001-01-01