Azure Template validation failure , expression is not valid - azure

Question

I've exported a resource group that contains some Logic apps that I want to use in Visual Studio but one Logic App is unable to be opened using the designer-view in VS.
I get this error even thou I haven’t modified the code in any way:
The template validation failed: 'The property 'expression' '[concat('#equals(toLower(triggerBody()?['', parameters('workflows_Booking_name'),'s']?['Event']), 'create')')]'
of template action 'Condition_-_Create_or_UpdateBookings' at line '1' and column '1827' is not a valid template language expression.'.
This is what the Logic App looks like in the portal for better understanding.

Answer 1

As Szymon Wylezol mentioned that it seems that it is wrong with the template itself. From the error message we know that expression [concat('#equals(toLower(triggerBody()?['', parameters('workflows_Booking_name'),'s']?['Event']), 'create')')] is incorrect. More detail about expressions please refer to document.
According to your supplied screenshot that we can get the expression as following in the code view:
"actions": {
"Condition_-_Create_or_UpdateBookings": {
"type": "If",
"expression": "#equals(toLower(triggerBody()?['Bookings']?['Event']), 'create')",
"actions": {},
"runAfter": {}
}
}
Please compare the code view in the VS with code view in the Azure portal.
Then it should be ready for view in the Visual Studio. More details about Design, build, and deploy Azure Logic Apps in Visual Studio please refer to the document
Demo code.
{
"$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"workflows_testlogic_name": {
"defaultValue": "testlogic",
"type": "string"
},
"workflows_tomtestLogicApp_name": {
"defaultValue": "tomtestLogicApp",
"type": "string"
}
},
"variables": {},
"resources": [
{
"comments": "Generalized from resource: '/subscriptions/ed0caab7-c6d4-45e9-9289-c7e5997c9241/resourceGroups/tomtestlogicApp/providers/Microsoft.Logic/workflows/testlogic'.",
"type": "Microsoft.Logic/workflows",
"name": "[parameters('workflows_testlogic_name')]",
"apiVersion": "2016-06-01",
"location": "eastasia",
"properties": {
"state": "Enabled",
"definition": {
"$schema": "https://schema.management.azure.com/providers/Microsoft.Logic/schemas/2016-06-01/workflowdefinition.json#",
"contentVersion": "1.0.0.0",
"parameters": {},
"triggers": {
"manual": {
"type": "Request",
"kind": "Http",
"inputs": {
"schema": {
"properties": {
"event": {
"type": "string",
"value": ""
},
"name": {
"type": "string",
"value": ""
},
"participants": {
"type": "integer",
"value": ""
}
},
"type": "object"
}
}
}
},
"actions": {
"Condition": {
"actions": {},
"runAfter": {},
"expression": "#equals(toLower(triggerBody()?['name']), 'test')",
"type": "If"
}
},
"outputs": {}
},
"parameters": {}
},
"dependsOn": []
},
{
"comments": "Generalized from resource: '/subscriptions/ed0caab7-c6d4-45e9-9289-c7e5997c9241/resourceGroups/tomtestlogicApp/providers/Microsoft.Logic/workflows/tomtestLogicApp'.",
"type": "Microsoft.Logic/workflows",
"name": "[parameters('workflows_tomtestLogicApp_name')]",
"apiVersion": "2016-06-01",
"location": "eastasia",
"tags": {
"displayName": "LogicApp"
},
"properties": {
"state": "Enabled",
"definition": {
"$schema": "https://schema.management.azure.com/providers/Microsoft.Logic/schemas/2016-06-01/workflowdefinition.json#",
"contentVersion": "1.0.0.0",
"parameters": {},
"triggers": {
"manual": {
"type": "Request",
"kind": "Http",
"inputs": {
"schema": {
"properties": {
"Bookings": {
"properties": {
"BookedByEmail": {
"type": "string"
},
"Event": {
"type": "string"
}
}
}
}
}
}
}
},
"actions": {
"Condition_-_Create_or_UpdateBookings": {
"actions": {},
"runAfter": {},
"expression": "#equals(toLower(triggerBody()?['Bookings']?['Event']), 'create')",
"type": "If"
}
},
"outputs": {}
},
"parameters": {}
},
"dependsOn": []
}
]
}