Unable to update Microsoft.ApiManagement/service/tenant - Method not allowed in StandardV2 pricing tier

[AndriyDmytrenko]

Bicep version
Bicep CLI version 0.31.34 (ec82b47d63)

Describe the bug
Wanted to update the APIM instance of SKU StandardV2 to apply the recommendation "API Management should disable public network access to the service configuration endpoints", but got the errors:

MultipleErrorsOccurred - Multiple error occurred: DeploymentWhatIfResourceError,DeploymentWhatIfResourceError,DeploymentWhatIfResourceError. Please see details.
DeploymentWhatIfResourceError - The request to predict template deployment changes to scope '/subscriptions/***********/resourceGroups/***********' has failed due to a resource error. See details for more information.
MethodNotAllowedInPricingTier - Method not allowed in StandardV2 pricing tier
DeploymentWhatIfResourceError - The request to predict template deployment changes to scope '/subscriptions/***********/resourceGroups/***********' has failed due to a resource error. See details for more information.
MethodNotAllowedInPricingTier - Method not allowed in StandardV2 pricing tier
DeploymentWhatIfResourceError - The request to predict template deployment changes to scope '/subscriptions/***********/resourceGroups/***********' has failed due to a resource error. See details for more information.
MethodNotAllowedInPricingTier - Method not allowed in StandardV2 pricing tier

To Reproduce
Have a code

targetScope = 'resourceGroup'

resource apim 'Microsoft.ApiManagement/service@2024-05-01' existing = {
  name: 'my-apim-instance-name'
}

resource apimTenant 'Microsoft.ApiManagement/service/tenant@2024-05-01' = [
  for item in ['access', 'gitaccess', 'gatewayaccess']: {
    name: item
    parent: apim
    properties: {
      enabled: false
    }
  }
]

run the command
az deployment group create --template-file apim.bicep --resource-group --name --what-if

Additional context
Add any other context about the problem here.

[stephaniezyen]

Unfortunately this is a Microsoft.ApiManagement RP issue. Please open up a support ticket with this RP.