AX 2012 suggest supplier purchase requisition

Hi,

The suggest vendor I’m talking about is when you either click purchase requisition lines>suggest supplier. Or when you click add item on the purchase requistion and then choose non-catalogue items and there clicks suggest supplier. You then get the option to choose supplier that already are suppliers existing in your company or suggest proposal suppliers.

When I have tried this, nothing happens and I’m not sure what should be happening.

I believe it has something to do with the workflow.