Problem base sync mfd problem with "ECC" Deorbit burn data is only accurate if your ecc is 0.015 or less

[Debs330]

When I try to do my deorbit burn with base sync mfd and glideslope mfd, I start the burn and while the burn is doing it's thing base sync mfd, in the "DEO" tab says "Deorbit burn data is only accurate if your ecc is 0.015 or less". the burn is done and I go for my reentry and I overshoot.