VED-941: Standardize Error 400 #867

Job	Run time
deploy-pr-backend / terraform-plan	40s
deploy-pr-backend / terraform-apply	2m 5s
run-e2e-tests (internal-dev-sandbox) / wait-for-deployment	7m 43s
run-e2e-tests (internal-dev) / wait-for-deployment	3m 43s
run-e2e-tests (internal-dev) / e2e-tests	6m 56s
run-e2e-tests (internal-dev-sandbox) / e2e-tests	20s
run-e2e-tests (internal-dev-sandbox) / batch-e2e-tests	0s
run-e2e-tests (internal-dev) / batch-e2e-tests	1m 18s
	22m 45s

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