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Please explain the problem with cyclical relationships in FM

Question asked by rjalex on May 18, 2017
Latest reply on May 18, 2017 by rjalex

Dear friends,

just starting to learn FM. After I finished designing the data model for an order/inventory system I stumbled on the problem very well described in this article:

 

Receiving Goods

 

Where I had designed on paper a table structure of Purchase Orders (PO), POlines, Receipts and ReceiptLines  just like in the article.

 

When I entered them in FM I got an error saying I needed to duplicate.

 

I am just not understanding :-( Can anyone please be so kind to explain what is happening with this solution (as per the article) ? Just can't wrap my mind around it fmp_poLineReceiptLine.png

 

Thank you very much.

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