Dynamics 365 Sales - BC Custom Lookup Field Integration
I know this is an old post at this point, but I struggled with this myself, this past week, and came up with an answer myself eventually, so I thought I'd share it here as well.
When mapping two custom tables, or at least from a custom table in BC, the table mapping fields are filtered. You can remove this filter to see the other fields as well, see the screenshot below. However, you cannot select a FlowField, because you will get an error saying the field must not have a relationship to another table.
I found the solution to it, by modifying a way of coding the mapping in AL. I'll link it here:
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