In this technique, the examples of Azure REST API is PUT https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/networkSecurityGroups/{networkSecurityGroupName}/securityRules/{securityRuleName}?api-version=2021-08-01.
It is totally as same as AZT506 PUT https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/networkSecurityGroups/{networkSecurityGroupName}/securityRules/{securityRuleName}?api-version=2021-08-01.
In this technique, the examples of Azure REST API is
PUT https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/networkSecurityGroups/{networkSecurityGroupName}/securityRules/{securityRuleName}?api-version=2021-08-01
.It is totally as same as AZT506
PUT https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/networkSecurityGroups/{networkSecurityGroupName}/securityRules/{securityRuleName}?api-version=2021-08-01
.I guess this is a typo.