[ExternalComponent invoke Scripting] Whenever you need to invoke an action Script (which you don't need to register in an M.Action entity), you can reuse the following construction. #sitecorecontenthub, #contenthub, #scripting, #externalcomponent #externalcomponentandscripting

ExternalComponentInvokingScript.js

var scriptIdentifier = "8m_bVGGMxk-zBdlAMuQVWA"; // No M.Action entity needed, just use the script identifier directly

var jsonData = { AssetId: assetId };
$.rest.post(`/api/scripts/${scriptIdentifier}/execute`, jsonData)
    .done(function () {
        options.messageBoard.addMessage({
            text: "The script was invoked successfully!", level: "success"
        });
    })
    .fail(function (xhr) {
    if (xhr.status == 403)
    {
        // This is just an example case when M throws a 403, in case the modification done INSIDE the script are causing this.
        // This case might be not appicable and the scenario might not follow the 403 response possibility, just an example
        options.messageBoard.addMessage({
            text: "This exception might be thrown from M, just an example case here", level: "warning" 
        });
    }
    else 
    {
        // Those exception messages are coming from the Script ITSELF, if there is an Exception thrown from inside. 
        for (var key in xhr.responseJSON){
            options.messageBoard.addMessage({
                text: xhr.responseJSON[key], level: "danger"
            });
        }
    }
});


//// CSX (C# Script) code in the Script:
//// Then in the Scripting you can use the following construction to access the passed data:
// var assetIdString = Context.Data["AssetId"]?.ToString();
// if (string.IsNullOrEmpty(assetIdString))
// {
//      throw new ValidationException(
//      "When merging assets, the source Asset Id should not be null!",
//      new ValidationFailure("Please, specify the id of the asset id which you want to merge into the other asset!", "AssetId"));
// }
// var sassetId = long.Parse(assetIdString);