What do these codes mean?

[Dolphin12]

When I look at the redemption history it shows $2 ATU and $4 Tenure what does this mean? Why is it 0 points?

[Dolphin12]

Thank you for clarifying that.

[slusagm · Accepted solution]

Those were from old days with legacy rewards system. You were earning legacy rewards and not with points system yet, so no point earned.  it was more for PM record keeping purposes, not really useful for us