There are no examples on the usage of the InvokePerform() AMPScript function in the official documentation -- at least that I can find.

Doing some testing and comparing the usage to the SOAP API, I noticed there are three more valid arguments. Here's my code to start a QueryDefinition:


var @rr, @objectID, @queryDefinitions
set @rr = CreateObject("RetrieveRequest")
SetObjectProperty(@rr, "ObjectType", "QueryDefinition")
AddObjectArrayItem(@rr, "Properties", "ObjectID")

set @sfp = CreateObject("SimpleFilterPart")
SetObjectProperty(@sfp, "Property", "CustomerKey")
SetObjectProperty(@sfp, "SimpleOperator", "equals")
AddObjectArrayItem(@sfp, "Value", "DataExtensionTest")

SetObjectProperty(@rr,"Filter", @sfp)

set @queryDefinitions = InvokeRetrieve(@rr, @rrStatus, @rrRequestID)

if rowcount(@queryDefinitions) > 0 then

  var @queryDefinition, @ObjectID, @obj

  set @queryDefinition = Row(@queryDefinitions, 1)
  set @ObjectID = Field(@queryDefinition, "ObjectID")

  set @obj = CreateObject("QueryDefinition")

  SetObjectProperty(@obj, "ObjectID", @ObjectID )
  Set @performStatusCode = InvokePerform(@obj, "start", @performStatusMessage, @unknown1, @unknown2, @performResult)


queryDefinitions: %%=rowcount(@queryDefinitions)=%%
<br>performStatusCode: %%=v(@performStatusCode)=%%
<br>performStatusMessage: %%=v(@performStatusMessage)=%%
<br>unknown1: %%=v(@unknown1)=%%
<br>unknown2: %%=v(@unknown2)=%%
<br>performResult: %%=v(@performResult)=%%


queryDefinitions: 1 
performStatusCode: OK 
performStatusMessage: QueryDefinition perform called successfully 
unknown1: 0 
performResult: ExactTarget.Integration.WSDL.PerformResult

Anyone know what @unknown1 and @unknown2 represent?

I also can't figure out for the life of me how to retrieve the values returned in the PerformResult. If anyone has some insight on that, I'd love to know.

  • From an initial look unknown1 could be an error code, 0 meaning OK in API terms. unknown2 could be last error code which has references in the Core library. I'll do some more digging and report back.
    – Amtera
    Jan 10, 2018 at 14:50

1 Answer 1


There is a bit more information found in the AMPscript Guide

  • 2
    LOL. I'm the co-author of The AMPscript Guide. I asked this question for the book! May 31, 2019 at 21:02
  • That's pretty amazing, and now I feel I have deserved this. Feel free to downvote me. :) May 31, 2019 at 21:04

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