Noc for new job

I am currently working in a PSU, say 'B' and I am on probation at this PSU 'B'. I had applied for a job in another PSU 'A' before joining PSU 'B'. Subsequently, I appeared for interview for PSU 'A'. Applying for outside employment need to be through channel as per my current PSU 'B', however as I applied for PSU 'A' when I was not employed with PSU 'B', applying through proper channel was not possible. Hence, I did not mention about my work experience (of 3 months) at PSU 'B' during the interview for PSU 'A'. If I get selected for job in PSU 'A', will this be a problem as producing NOC was mandatory for candidates working with PSUs at the time of interview?