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msdyn_SuggestPrimaryForMergeAction returns error

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Posted on by LA-29040853-0

Hay Everyone,

I'm building a Power Automate flow that should automatically merge duplicate accounts in Dynamics 365.
I'm calling msdyn_SuggestPrimaryForMergeAction via PerformUnboundAction, but it always returns a 400 error.

Input:

json

{
"actionName": "msdyn_SuggestPrimaryForMergeAction",
"item/RecordList": [
{
"@odata.type": "Microsoft.Dynamics.CRM.account",
"accountid": "(accountid)"
},
{
"@odata.type": "Microsoft.Dynamics.CRM.account",
"accountid": "(accountid)"
}
]
}

Error response:

json

{
"error": {
"code": "0x80040265",
"message": "Suggest primary record plugin failed!!!"
}
}

What I've checked so far:

Both accounts exist and are active
No custom plugins registered on Merge for the Account entity (only ActivityFeeds on Case/Anfrage)
Plugin Trace Log shows no entry for msdyn_SuggestPrimaryForMergeAction at all, even with tracing set to "All"
We have Dynamics 365 Sales Enterprise licensed

Questions:

Is msdyn_SuggestPrimaryForMergeAction even intended for use in Power Automate flows, or is it only used internally by the Duplicate Detection UI?
Is there a correct way to call this action programmatically, or should I use the standard Merge action instead?

Any help appreciated! :)

Categories:

Dynamics 365 general

Power Platform integration

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Subra 1,190 on at

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Hi @LA-29040853-0

Please find the below suggestions.

1. I think this action can be used only for the internal purpose and it can't be as a public action.

2. Yes, you can use the standard merge functionality.

Thanks,
Subra

If this helped, please mark it as "Verified" for others facing the same issue

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André Arnaud de Cal... 305,600 Super User 2026 Season 1 on at

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Hi,

I'm not sure if the action can be called via Power Automate. Can you share the settings you have for this action in your flow and share the input and output values from the flow run for this action?

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11manish 825 on at

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Instead of relying on msdyn_SuggestPrimaryForMergeAction, implement your own primary-record selection logic and then use the supported merge functionality.

For a robust Dynamics 365 duplicate-account automation solution:

Detect duplicate accounts

Determine the primary account using your own business logic

Use the supported Merge operation

Avoid depending on msdyn_SuggestPrimaryForMergeAction unless Microsoft provides official guidance and support for programmatic usage.

This will result in a more reliable and maintainable solution that is less likely to break after future Dynamics 365 updates.

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LA-29040853-0 8 on at

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Hay @André Arnaud de Calavon ,

the input for the Action:

{

    "host": {

        "connectionReferenceName": "shared_commondataserviceforapps",

        "operationId": "PerformUnboundAction"

    },

    "parameters": {

        "actionName": "msdyn_SuggestPrimaryForMergeAction",

        "item/RecordList": [

            {

                "@odata.type": "Microsoft.Dynamics.CRM.account",

                "accountid": "ca4e74ee-df7b-ef11-a670-6045bd87478f"

            },

            {

                "@odata.type": "Microsoft.Dynamics.CRM.account",

                "accountid": "20cc155a-f44a-ed11-bba1-6045bd90590f"

            }

        ]

    }

}

the output of the Action:

{
"statusCode": 400,
"headers": {
"Cache-Control": "no-cache",
"OData-Version": "4.0",
"Content-Type": "application/json; odata.metadata=minimal",
"x-ms-service-request-id": "ec49a737-c352-4436-a46f-2c938c4e4213"
},
"body": {
"error": {
"code": "0x80040265",
"message": "Suggest primary record plugin failed!!!"
}
}
}

The Settings:

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