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For some reason my workflow (Workflow A) designed in SPD to start when a new item is created does not start when a new item is created in another SPD workflow using the "Create List Item" action.

My scenario is:*

Workflow A - configured to start when a new item is created in List A: Creates a new list item in List B.

Workflow B - configured to start when a new item is created in List B: Creates a new list item in List A

When I test this i get the following:

I manually create a list item in List A.
Workflow A fires and creates a new list item in List B.
Workflow B fires and creates a new list item in List A.
But Workflow A does not fire on the new item in List A.


Is this happening because the item created in List A by Workflow B is created by System Account thus not firing Workflow A?

I think ----------------edit-----------------------------------

I am aware this is causes an infinite loop there is a pause for duration action set to 1 year in workflow A. So it fires in yearly cycles.

I know sp2 prevents infinite loops being created on the same list but from what i read of the article below suggests this is possible to do cross lists as in my scenario. http://blogs.msdn.com/b/sharepointdesigner/archive/2009/07/13/service-pack-2-prevents-an-on-change-workflow-from-starting-itself.aspx

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4 Answers 4

up vote 1 down vote accepted

you can create an infinate loop on the same list, if you like. Just use two workflows (firing on create and edit) on a list with one yes or no field (defaulted to No, or Yes - shouldnt matter in this case) that the workflows can toggle back and fourth to trigger eachother.

Workflow One action: wait for yes/no field to equal Yes and then Set field value of yes/no field to No

Workflow Two action: wait for yes/no field to equal No and then Set field value of yes/no field to Yes

This should cause an infinate loop on a list item using 2 workflows that trigger eachother back and fourth. You can also do this in a more controlled way by adding a counter that adds to itself with each loop so that after 30 loops, the counter will equal 30, after 40 loops, counter equals 40, etc... You can then set a workflow condition that stops the back and fourth triggering at Count = X

A lot more ways to get creative with this, but you can loop a workflow in sharepoint just like any language.

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I'd hate to point out the obvious but I'm assuming there's a reasoning behind your logic:

That will start an infinite loop, you realise?

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Fair point its an infinite loops I want :) –  nav Nov 16 '10 at 21:12
edited question with explaination –  nav Nov 16 '10 at 21:21
Is Sharepoint clever enough (I'm hoping not) to detect and prevent this? –  nav Nov 16 '10 at 21:25
I don't think it is to be honest (though others here might know more) - have you had a look at the Workflow History List to see if there's any info on what's happening, if anything at all? If you have access o the ULS Log there also might be some clues as to why the Workflow A is refusing to start the second time... –  James Love Nov 16 '10 at 21:51
Thanks - since the workflow doesn't start there is no workflow history but I can confirm the item is created but the workflow doesnt start. I checked the ULS logs but there are no error or information i can decipher from it. –  nav Nov 16 '10 at 22:09

Have you tried mixing things up a bit and manually creating the first item in List B to see if it still stops at the same point?

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Or u can start the WorkFlow dynamicly, since SPD 2010 workflows have a kind of security which will prevent infinite loops.

Add an event receiver (item added) and start the workflow there.

I am guessing this will work.

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