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Power Automate - Building Flows
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JSON Parse Error

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Posted on by 5

I am experiencing a validation error on my JSON Parse step and I'm not sure where my error exists.

 

ValidationFailed. The schema validation failed.

 

Schema:

 

{
 "type": "object",
 "properties": {
 "data": {
 "type": "array",
 "items": {
 "type": "object",
 "properties": {
 "variant_id": {
 "type": "integer"
 },
 "location_id": {
 "type": "integer"
 },
 "reorder_point": {
 "type": "string"
 },
 "average_cost": {
 "type": "string"
 },
 "value_in_stock": {
 "type": "string"
 },
 "quantity_in_stock": {
 "type": "string"
 },
 "quantity_committed": {
 "type": "string"
 },
 "quantity_expected": {
 "type": "string"
 },
 "quantity_missing_or_excess": {
 "type": "string"
 }
 },
 "required": [
 "variant_id",
 "location_id",
 "reorder_point",
 "average_cost",
 "value_in_stock",
 "quantity_in_stock",
 "quantity_committed",
 "quantity_expected",
 "quantity_missing_or_excess"
 ]
 }
 }
 }
}

 

 

Content:

 

{
 "data": [
 {
 "variant_id": 6861410,
 "location_id": 28299,
 "reorder_point": "0.00000",
 "average_cost": "0.0721608936",
 "value_in_stock": "3391.5620000000",
 "quantity_in_stock": "47000.00000",
 "quantity_committed": "0.00000",
 "quantity_expected": "180000.00000",
 "quantity_missing_or_excess": "227000.00000"
 },
 {
 "variant_id": 6861411,
 "location_id": 28299,
 "reorder_point": "0.00000",
 "average_cost": "0.0326992683",
 "value_in_stock": "2681.3400000000",
 "quantity_in_stock": "82000.00000",
 "quantity_committed": "0.00000",
 "quantity_expected": "180000.00000",
 "quantity_missing_or_excess": "262000.00000"
 }
 ]
}

 

 

Error Output:

 

[
 {
 "message": "Invalid type. Expected String but got Null.",
 "lineNumber": 0,
 "linePosition": 0,
 "path": "data[21].average_cost",
 "schemaId": "#/properties/data/items/properties/average_cost",
 "errorType": "type",
 "childErrors": []
 },
 {
 "message": "Invalid type. Expected String but got Null.",
 "lineNumber": 0,
 "linePosition": 0,
 "path": "data[22].average_cost",
 "schemaId": "#/properties/data/items/properties/average_cost",
 "errorType": "type",
 "childErrors": []
 },
 {
 "message": "Invalid type. Expected String but got Null.",
 "lineNumber": 0,
 "linePosition": 0,
 "path": "data[24].average_cost",
 "schemaId": "#/properties/data/items/properties/average_cost",
 "errorType": "type",
 "childErrors": []
 },
 {
 "message": "Invalid type. Expected String but got Null.",
 "lineNumber": 0,
 "linePosition": 0,
 "path": "data[26].average_cost",
 "schemaId": "#/properties/data/items/properties/average_cost",
 "errorType": "type",
 "childErrors": []
 }
]

 

 

Thank you for your help.

  • stinsora Profile Picture
    5 on at
    Re: JSON Parse Error

    Thank you @v-bofeng-msft for the solution and the link. 😀

  • Verified answer
    v-bofeng-msft Profile Picture
    on at
    Re: JSON Parse Error

    Hi @stinsora :

    The key is that there may be records in your content where the value of the "average_cost" field is empty.

    Please try this schema:

     

    {
     "type": "object",
     "properties": {
     "data": {
     "type": "array",
     "items": {
     "type": "object",
     "properties": {
     "variant_id": {
     "type": "integer"
     },
     "location_id": {
     "type": "integer"
     },
     "reorder_point": {
     "type": "string"
     },
     "average_cost": {},
     "value_in_stock": {
     "type": "string"
     },
     "quantity_in_stock": {
     "type": "string"
     },
     "quantity_committed": {
     "type": "string"
     },
     "quantity_expected": {
     "type": "string"
     },
     "quantity_missing_or_excess": {
     "type": "string"
     }
     },
     "required": [
     "variant_id",
     "location_id",
     "reorder_point",
     "average_cost",
     "value_in_stock",
     "quantity_in_stock",
     "quantity_committed",
     "quantity_expected",
     "quantity_missing_or_excess"
     ]
     }
     }
     }
    }

     

    I think this link will help you a lot:

    A Thesis on the Parse JSON action in Microsoft Flow(Problem 4 - null value properties)

     

    Best Regards,

    Bof

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