Acceptance test output:

% make testacc TESTARGS='-run=TestAccTransfer_serial/HostKey/UpdateHostKeyBodyWO' PKG=transfer
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
make: Running acceptance tests on branch: 🌿 f-aws_transfer_host_key 🌿...
TF_ACC=1 go1.24.6 test ./internal/service/transfer/... -v -count 1 -parallel 20  -run=TestAccTransfer_serial/HostKey/UpdateHostKeyBodyWO -timeout 360m -vet=off
2025/10/06 13:03:33 Creating Terraform AWS Provider (SDKv2-style)...
2025/10/06 13:03:33 Initializing Terraform AWS Provider (SDKv2-style)...
=== RUN   TestAccTransfer_serial
=== PAUSE TestAccTransfer_serial
=== CONT  TestAccTransfer_serial
=== RUN   TestAccTransfer_serial/HostKey
=== RUN   TestAccTransfer_serial/HostKey/UpdateHostKeyBodyWO
    host_key_test.go:342: Step 2/2 error: Pre-apply plan check(s) failed:
        aws_transfer_host_key.test - expected Replace, got action(s): [no-op]
--- FAIL: TestAccTransfer_serial (190.34s)
    --- FAIL: TestAccTransfer_serial/HostKey (190.34s)
        --- FAIL: TestAccTransfer_serial/HostKey/UpdateHostKeyBodyWO (190.34s)
FAIL
FAIL	github.com/hashicorp/terraform-provider-aws/internal/service/transfer	195.849s
FAIL
make: *** [testacc] Error 1

Author: ewbankkit