Peru Localization - Problems/Doubts with Search on F76H020

JD Edwards 9.2 Tools 9.2.5.6 with Peruvian localization installed.

I had been struggling in order to generate an invoice for Peru properly. After several intempts, I was able to process it and to not update the sales order line with status 931/831.

However, I saw one search that to me it is not correct. As far as I understand, the configuration from F4008 is also inserted on the table F76H020, which is fine. However, the search that it does is with the F4211.itm on the field F76H020.noitm. In my perspective, and following the standard configuration of P4008, it was supposed to be on the item tax code (F4211.TAX1 / F4102.