Invoice Line DFFs

Summary:

How to associate invoice line dff fields back to the invoice line via sql

Content (required):

The table PJB_BILLING_EVENTS holds attribute_number1 field for invoice line dff's. But I can't seem to figure out how to associate it back to an invoice line id; I can connect it to invoice headers with contract ID, but that still gives me a many-to-one relationship; it's supposed to be line level?

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