No Attribute I can choose in the combo box

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I simply want to use combo box to list supplier name, I chose Database as Data source and when I need to select  the Attribute, there is nothing I can select. The entity only have 2 attributes, one is guid which is String type, another one is company_name which is String as well. Do I miss anything here?
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1 answers
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Hi Bruce,

 

Can you share your domain model?

The association to your supplier has to be *-1. So 1 supplier can be selected.

 

Regards,

Marijn

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