[BUG] 406: Not Acceptable error received after PUT

[catriona-m]

API Spec link

https://github.com/Azure/azure-rest-api-specs/blob/main/specification/dataprotection/resource-manager/Microsoft.DataProtection/stable/2024-04-01/dataprotection.json

API Spec version

2024-04-01

Describe the bug

Sending a PUT request with the below results in a 406: Not Acceptable response with no detailed error message and no body.

PUT https://management.azure.com/subscriptions/xxx/resourceGroups/rg1/providers/Microsoft.DataProtection/backupVaults/vault1?api-version=2024-04-01
{
  "identity": {
    "type": "SystemAssigned"
  },
  "location": "westeurope",
  "properties": {
    "securitySettings": {
      "encryptionSettings": {
        "infrastructureEncryption": "Disabled",
        "kekIdentity": {
          "identityType": "SystemAssigned"
        },
        "keyVaultProperties": {
          "keyUri": "https://xxx.vault.azure.net/keys/key1/xxxxxx"
        },
        "state": "Enabled"
      },
      "softDeleteSettings": {
        "retentionDurationInDays": 14,
        "state": "Off"
      }
    },
    "storageSettings": [
      {
        "datastoreType": "VaultStore",
        "type": "LocallyRedundant"
      }
    ]
  },
  "tags": {
    "ENV": "Test"
  }
}

Expected behavior

A detailed error message

Actual behavior

A 406: Not Acceptable response with no detailed error message and no body.

Reproduction Steps

Send PUT request with securitySettings.encryptionSettings

Environment

No response

[v-jiaodi]

@ankur741999 Please help take a look, thanks.