help! is this an illegal formation?

[axis]

---------st----------
aml---amc---amr
----------------------
dml-dmc-dmc-dmr
------cb---cb-------
---------gk----------

[Cat Harrison]

Yep. That's no good. You need at least three on the back line.

From Squad - Top Eleven Official Wiki

"Throughout the whole match you must have:

a goalkeeper (blue)
at least three defenders (green) (DL/DC/DR)
at least one striker (red)
at least one player on both flanks.
at least four players in the opponents half (ML/MC/MR or AML/AMC/AMR or ST)
at least three players in the midfield section (AML/AMC/AMR and/or ML/MC/MR and/or DML/DMC/DMR)

One player on each flank is enough, but three players on the same flank will also lead to 20% possession. "

[axis]

damn. thanks! is there any ways you can have wing backs in this game?

[Buffs Mad]

3Dcs + wingbacks

[Cat Harrison]

Sure you can have DL DC DR, or DL DC DC DR, or DC DC DC... just so long as three guys on back line.