Report with null data between tables

Content

Hello experts

I've managed to make an interaction between 2 tables in OTBI DataModel.
Then I need to create a report.

The problem is the report does not show the lines that have null value in table 2:

ex
Table  1 1 1 2 2 2
           a b c - - -
           d e f x y z

The report only presents the second line.
How can I solve this?

Thanks.

All of this is because I'm trying to create a full report that brings the history of approval notifications and pending ones as well as failed.

But the table fa_fusion_soainfra.wftask that gives me the approvers is not bringing all te information i need.