TriggerInputSchemaMismatch

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Posted on by lumos

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Hello i have a flow in power automate where i have 3 inputs , (2 texts and 1 file ) , in the powerapps i try to execute the flow but i got error;

this is my code :

ForAll(
    DataCardValue30_1.Attachments,
    xxxxxxx.Run(
        JSON(
            {
                Input: TextInputCanvas5.Text,  // First text input
                Input1: DataCardValue30.Text,   // Second text input
                FileContent: {
                    name: ThisRecord.Name,       // File name
                    contentBytes: ThisRecord.Value // File content in bytes
                }
            },
            JSONFormat.IncludeBinaryData // Ensures binary data is included
        )
    )
)

Please help me!

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Inogic 1,135 Moderator on at

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Hi,

As per your description, your flow has 3 inputs (2 text inputs and 1 file), and when calling it from Power Apps, you receive this error:
TriggerInputSchemaMismatch
Required properties are missing from object: text_1

Why This Is Happening
This error occurs because the flow trigger expects separate parameters, but you are passing a single JSON object instead.

When you use the Power Apps (V2) trigger in Power Automate, each input becomes a required parameter (for example: text, text_1, file, etc.).
However, your code is wrapping everything inside: JSON({...})
So the flow is receiving one string parameter, not the three expected inputs — which causes the schema mismatch.
Correct Approach
You should pass parameters separately, not as a JSON object.
ForAll(
DataCardValue30_1.Attachments,
xxxxxxx.Run(
TextInputCanvas5.Text,
DataCardValue30.Text,
{
name: ThisRecord.Name,
contentBytes: ThisRecord.Value
}
)
)
Notes
• Do NOT wrap parameters inside JSON()
• The order of parameters must match the order in the flow trigger
• The file parameter must be passed as an object with:

name

contentBytes

Hope this helps.

Thanks!

Inogic

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