How to pass reference between repeating Elements?

Summary:

How to pass reference between repeating Elements?

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Hi,

While Creating Oracle Fusion AR Invoice using REST. I have multiple invoice lines and each invoice line can have one or more tax lines. Now I have one Oracle EBS View which bring Invoice Lines and other bring Tax Lines.

I have mapped EBS invoice lines (LEFT SIDE ) with Oracle Fusion AR invoice line (RIGHT SIDE) and Similarly for Tax lines but how can I pass invoice line id to Tax so that only relevant tax lines be created against each invoice line? OR If there is any better approach to achieve the same.