Review the last effective parameter assignment in an Azure CLI deployment

Source facts

Azure CLI processes deployment parameter assignments in sequence and uses the final assignment when a value appears more than once. Microsoft recommends supplying the parameter file before selective KEY=VALUE overrides. A .bicepparam file has a separate restriction: its parameter argument can be supplied only once. Parameter files must be local. Microsoft Learn.

Applicability

Review the actual command assembled by the deployment pipeline, including arguments contributed by wrappers or environment-specific stages. This brief focuses on JSON-file and inline assignment order; do not assume that the same composition pattern applies unchanged to a .bicepparam invocation.

DSE recommendation

DSE recommends keeping a short, explicit override list beside the chosen parameter file. For each override, record the intended final value and why it differs from the file. Inspect the complete argument order before an approved deployment, with sensitive values redacted. Avoid relying on a reviewer to discover an unexpected later assignment by reading several pipeline fragments independently.

Verification

Use harmless synthetic values in a controlled validation or deployment test to distinguish the file value from the inline value. Repeat with the argument order changed and compare the effective result with the documented precedence. Then inspect the production invocation without exposing secrets, confirming that each intended override appears in the correct position. Keep the parameter-file revision and sanitized final command structure with the release evidence.

Official references

Microsoft Learn. Source retrieved September 9, 2026.