how do I ass my ip pin to my 2024 cactus that has already been e-filed

You cannot add anything to a return that has already been e-filed.  If you were supposed to include a six digit IP then the e-file will be rejected.  When it rejects, you can then add the IP pin and re-file it.   But you will have to wait until the IRS begins to reject/accept e-files---they start on January 29.

Do not try to change anything on your return while it is in pending.

If you have a 6 digit PIN issued to you by the IRS you need to enter it in order to e-file.  Go to Federal>Other Tax Situations>Other Return Info>Identity Protection PIN and enter the six-digit PIN.

Taxes were done but rejected , I need to add ip pin number , where do I do that 

Here are two ways to navigate to the section to enter the 6 digit IP PIN: 

1. Log in and open your return ("Take me to my return") 
2. Once the return is open, then go to the Federal Taxes tab. 
3. Subtab Other Tax Situations 
4. Scroll down to Other Return Info. 
5. Choose Identity Protection PIN and Start (or Revisit.) 
6. Next screen asks:  "Did you or any of your dependents get an IP PIN from the IRS for this year's taxes?" 

Or another way: 

1. Open your return if not already open.  ("Take me to my return.") 
2. Once the return is open, click at the top on MY ACCOUNT, then choose TOOLS. 
3. In the Tools window choose TOPIC SEARCH. 
4. Enter IP PIN without quotes. 
5. In the selection list highlight IP PIN and click GO. 
6. Next screen asks:  "Did you or any of your dependents get an IP PIN from the IRS for this year's taxes?"