Amplify subdomain cannot point to a non-existent branch

[f-laino]

Describe the bug

updateDomainAssociation request throw a Client Exception A subdomain cannot point to a non-existent branch

Regression Issue

• Select this option if this issue appears to be a regression.

Expected Behavior

domainAssociation response

Current Behavior

Error executing "UpdateDomainAssociation" on "https://amplify.eu-west-1.amazonaws.com/apps/xyz/domains/my-root-domain.com"; AWS HTTP error: Client error:  ▶
{"message":"A subdomain cannot point to a non-existent branch"}

(Obviously my-root-domain.com and xyz are placeholder here)

Reproduction Steps

$amplify = new AmplifyClient([
                'credentials' => [
                    'key' => MY_KEY_ID,
                    'secret' => MY_SECRET,
                ],
                'region' => DEFAULT_REGION,
            ]);
$amplify->updateDomainAssociation([
                'appId' => 'xyz',
                'domainName' => 'my-root-domain.com',
                'subDomainSettings' => [
                    [
                        'branchName' => 'my-branch-name',
                        'prefix' => 'my-subdomain',
                    ],
                ]
            ]);

Possible Solution

No response

Additional Information/Context

No response

SDK version used

3.334.7

Environment details (Version of PHP (php -v)? OS name and version, etc.)

php 7.4.33

[f-laino]

Solved: branch name is not the displayed label (i.e. dev-feature-name), but the value on repository (i.e. dev/feature-name)

[github-actions]

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