Worrying about my coe

Hi. I�fm applying for coe (working) and it�fs been one and half month. I used to apply for student coe via my japan university�fs staff. At that time they asked me for more information because I left some blank in the form. (I�fm not sure if they asked me before or after they submitted the form)
I told them the missing information and few months later my student coe got accepted.

Now what I�fm worrying about is, will I get rejected if I accidentally told a lie about my application history? (I told my current employer that I used to apply for coe once, and got accepted) .

1,5 months isn�ft that long. See this other thread where people are posting their experience;
https://www.japan-guide.com/forum/quereadisplay.html?0+175176

I am confused though by your statement of lying in the application. If you did report incorrect information that obviously can be a problem.

You once applied for a CoE for a different type of visa, and you got accepted, it sounds like, and you too the same to your employer, correct? Then that should be no problem.

If you told your employer that you had never applied for a CoE, but in fact you had, and if the immigration authorities notices that through your passport number, if that is important to the immigration, they will simply ask your employer, who in turn will ask you about it. That might delay things a bit, but that should be about all.