office 365

You should make the change in your on-premises AD, it will sync to Office 365.

I don't see the incorrect phone number in attribute editor of that user account in AD. WHERE should I correct

I don't see the work number in AD only mobile

I need to correct work number

In outlook, my work cell is listed as my contact number, not my phone extension of 2861

mobile number shows correctly but the work number needs to be changed in outlook when I click user name in to column

I need to correct my work number in outlook my mobile number is ok. IN AD I cant find work number attribute column

Pramod,
1.  Let's find out which property is holding the wong number
2. Open powershell on your DC (right-click Run as administrator)

Import-Module ActiveDirectory
Get-ADuser "userssamaccountname"  -properties *  | Select *phone*,Office*



Once you find out which property has to be changed reset it.   Let's say it's the OfficePhone that you realized has the wrong number

Set-ADuser "Userssamaccountname" -OfficePhone '555-123-4567'


Once you change the number give it time to sync with o365

when I ran this command I don't see the incorrect work number there I see office number and mobile numbers

when u double click user name in outlook where is the work number being pulled from?

This info is being pulled from AD.  Every company may set their numbers up differently.  ON the user in question use the powershell commands I gave you to see the phone numbers.  If you prefer the gui , open the properties of the user, if you don't see it in the Office number in the General tab, go to the Organization tab and check the numbers in there.

when I go to outlook, click on new , type user name  in properties I see work number : xxx.xxx.xxxx which I don't see anywhere in AD that number

when I run this command :Get-ADuser "userssamaccountname"  -properties *  | Select *phone*,Office*

I see 4 numbers pulled up but not the number which is shown in user's outlook properties as work number

Fair enough  do this command

Get-ADuser "userssamaccountname"  -properties *  | Select *phone*,Office*,work*

it doesn't pull the work number , it is blank , should I fill with correct number
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what command should I use to update the work number with correct number

it is not showing, I cant take snip from outlook , when I type username when opening new email , when I double click my username for ex.

I see work and mobile numbers , I see for affected user work number showing incorrect which I cant see in AD profile

where should I check in office 365 portal?

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I see the same work number in Skype for business online

but I don't see that work number in her AD profile

Set-ADuser "Userssamaccountname" -OfficePhone '555-123-4567'

I am getting this error
Capture.PNG

That screenshot you sent doesn't even match the command you put up there.

Run this command and paste the output
Get-AdUser 'Samaccountname' -properties * | fl

it doesn't give the work number anywhere