Tier 2 general change of employment mistakes in approval letter

Hello everyone,

I had an appointment today at Croydon T2G incountry switch premium
Service fortunately my appointment was successful but I got 3 year visa until 2018-2021and my sponsor applied and paid for 5 year visa 2018-2023. Initially I was assigned Cos which s of 3 year on my request cos was amended for 5 years and on the day appointment I took both cos (3 year)+ amended sponsor note (5 year) to submit

After coming home, I spot a mistake in my Approval letter from home office length of time I can stay in the UK. -3 years
I
Will this wrong information also present on my BRP when I receive it upon arrival? If so, what can I do now? Please suggest guys

Thanks