Why LOOP AT XVBAP is triggering multiple times in user-exit in 1 item order

Hi,
Just curious,
I put the break point at LOOP AT XVBAP in user-exit of MV45A include of sales order transaction, then I created a sales order with ONLY one item(10) of 1 quantity (meaning, ONLY one schedule line)....then, Why my break-point(LOOP AT XVBAP) is triggering multiple times? even though there is ONLY one item/1 quantity? is supposed to trigger only 1 time(one iteration) right?
why mupltiple iterations are happening?
thank you

Hello ,
yeah thats true , that exit programs will called several types by SAP itself , so u need to find right FORM exits for ur requirements.
regards
Prabhu

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I'm hoping there's someone here who has a bit more experience playing around with these.
I used the example code from here ( Page 43 ): http://wwwimages.adobe.com/content/dam/Adobe/en/devnet/creativesuite/pdfs/CC14_Extension_S DK.pdf
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documentAfterActivate has its own side effect due to the way photoshop works.
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I was so tired last night that when I found out the cause of it, I never even thought about unregistering...
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Why LOOP AT XVBAP is triggering multiple times in user-exit in 1 item order

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