How can I desactive activation lock in a iPad

Hello Goro-2203,

Welcome to Apple Support Communities. 

We understand that your iPad has Activation Lock. We are happy to help.

Did you recently purchase this iPad? If so, was the iPad purchased secondhand or given to you? If so, the owner of the iPad will need to remove their Apple ID. The owner can use the steps here to remove Activation Lock: How to remove Activation Lock - Apple Support

"Remove Activation Lock on the device

Follow the onscreen steps to enter the Apple ID and password you used to set up your device or your device passcode.

Learn how to find your Apple ID or reset your Apple ID password.

Remove Activation Lock on the web if a device is offline

1. Go to www.iCloud.com/find.
2. Sign in with your Apple ID and password.
3. At the top, click All Devices.
4. Select the device that you want to remove from iCloud.
5. Click Remove from Account.

Start a support request

If you need help removing Activation Lock and have proof of purchase documentation, you can start an Activation Lock support request."

Here’s additional information on Activation Lock: Activation Lock for iPhone, iPad, and iPod touch - Apple Support

"Check for Activation Lock before you buy a device from someone else

Before you buy an iPhone, iPad, or iPod touch from someone other than Apple or an Apple Authorized Reseller, make sure that the device is erased and no longer linked to the previous owner’s account.

On a device with iOS or iPadOS 15 or later that is protected by Activation Lock, you see an "iPhone Locked to Owner" screen when you turn on or wake the device. Don't take ownership of any used iPhone, iPad, or iPod touch if it's protected by Activation Lock. 

If you don't see that screen, follow these steps to check if the device is ready to use: 

1. Turn on and unlock the device. 
2. If the passcode Lock Screen or the Home Screen appears, the device hasn't been erased. Ask the seller to follow the steps below to completely erase the device. Don't take ownership of any used iPhone, iPad, or iPod touch until it's been erased.
3. Begin the device setup process.
4. If you're asked for the previous owner’s Apple ID and password, the device is still linked to their account. Hand the device back to the seller and ask them to enter their password. If the previous owner isn't present, contact them as soon as possible and ask them to use a browser to remove the device from their account. Don't take ownership of any used iPhone, iPad, or iPod touch until it has been removed from the previous owner’s account.

A device is ready for you to use when you see the Hello screen."

Let us know if you have further questions.

Take care.