W2 from lawsuit settlement, missing employer fein but state id and ca sdi. TT won’t let me efile.

i got a normal w2 from the employer for wages as usual. This has ca code on it. I got a lawsuit settlement w2 from the legal agency, but on here all entries are blank except for ca sdi. It has the same employer state id as the regular w2. But it’s missing an employer federal id as well. In this case can I add this ca sdi onto my regular wage w2 as a second entry ? So box 14 will then have 2 entries one for ca vpdi from the original w2 for usual wages and one from ca sdi for the lawsuit w2 sent by the lawyer but with employer state id. i made the change to test and it did not impact my refund amount for federal or state but the ca w2 on the ca 540 changed slightly as that employer section now includes both amounts under sdi for ca 540 on the form generated by tt. 1. Where on federal 1040 can I find this amount reflecting? 2. Using this method can I still efile? 3. Would this step cause any confusion, either at ca or federal level if I e-file this way or is it recommended to paper file. Thanks