Check in to a folder that is controlled by a gated check-in build process
TFS 2017 | TFS 2015 | TFS 2013
When you check in files to a version control folder that is controlled by a gated check-in build process, there are some additional steps that you must take to complete the check-in.
Prerequisites
You must be one of the Contributors for your project. To learn more, see Default TFVC permissions.
Begin checking in changes to a folder that is controlled by a gated check-in build
If the Gated Check-in dialog box appears during your check-in, then your changes must first be built by Team Foundation Build before they can be checked in.
To check in changes to a folder that is controlled by a gated check-in build
In the Gated Check-in dialog box:
If a build pipeline is displayed, proceed to the next step.
If the Build pipeline menu is displayed instead of the name of a build pipeline, on the Build pipeline menu, choose the build pipeline that your build engineer suggests that you use.
Decide how you want to proceed:
Cancel the check-in operation and continue working: If you do not want to try building your changes yet, choose Cancel, and then when the system asks you if you want to delete the shelveset, choose Yes.
Cancel the check-in operation and start a private build of your changes: If you want to build the code yourself in a private build, choose Cancel. You can now build the shelveset manually. For more information, see Get started with CI/CD.
Proceed with the check-in operation while keeping your changes in your workspace: To proceed with the check-in operation and continue working with your changes, see Proceed with the Gated Check-in after Keeping the Changes in Your Workspace.
Proceed with the check-in operation while deleting changes in your workspace: If you do not need to continue working with your changes, see Proceed with the Gated Check-in after Deleting the Changes in Your Workspace.
Bypass the gated check-in requirement: If you have the Override check-in validation by build permission set to Allow, you can bypass the gated check-in requirement. Choose Show options, and then choose Bypass validation build and check in my changes directly (requires permissions).
Proceed with the gated check-in after keeping the changes in your workspace
The gated check-in process provides a way to proceed with the check-in and continue working with your changes. The drawback of proceeding in this way is that if the build completes successfully you must reconcile the changes in your workspace with the changes that are checked into version control.
To proceed with the gated check-in after keeping your changes in your workspace
Follow the steps in Begin Checking in Changes to a Folder that is Subject to Gated Check-in.
In the Gated Check-in dialog box, choose Build Changes.
In Team Explorer, when the information message appears in the Pending Changes page, monitor the build by choosing the here link to display the build results window. You can also choose
Home, and then choose 
Builds to monitor the build on the Builds page.After the build is completed:
Check-in committed: We recommend that you reconcile your workspace before you continue developing your code. If you are using the Build Notifications application, the Gated Check-in dialog box appears. Choose Reconcile. Otherwise, in Team Explorer, on the Builds page, under My Builds, open the shortcut menu for the completed build, and then choose Reconcile Workspace. When the Reconcile Workspace dialog box appears, use this dialog box to resolve version control conflicts.
Check-in rejected: Correct the problems that caused the check-in to be rejected. In Team Explorer, on the Builds page, under My Builds, double-click the build (or open the shortcut menu for the build, and then choose Open). The build results window appears and contains information that can help you resolve the problem that caused the build to fail. For some types of problems, you may be able to choose the error or issue to view the file that requires corrections.
Proceed with the gated check-in after deleting the changes in your workspace
If you want to proceed with the gated check-in operation and you do not plan to continue working with your changes, you can delete the changes in your workspace. Your changes are preserved in a shelveset and built by the system. If the build completes, then your changes are checked in. If the build fails, then you can unshelve the shelveset to get the changes back into your workspace.
To proceed with the gated check-in after deleting changes in your workspace
Follow the steps in Begin Checking in Changes to a Folder that is Subject to Gated Check-in.
In the Gated Check-in dialog box:
Choose Show Options and then clear Preserve my pending changes locally.
Choose Build Changes.
In Team Explorer, when the information message appears in the Pending Changes page, monitor the build by choosing the here link to display the build results window. You can also choose
Home, and then choose Builds to monitor the build on the Builds page.After the build is completed:
Check-in committed: Now that your changes are checked in, you may want to get the latest version of the files so that your workspace contains these changes. For more information, see Download (get) files from the Server.
Check-in rejected: Correct the problems that caused the check-in to be rejected.
In Team Explorer, on the Builds page, under My Builds, double-click the build (or open the shortcut menu for the build and then choose Open). The build results window appears.
In the build results window, look for information that can help you resolve the problem that caused the build to fail. For some types of problems, you may be able to choose the error or issue to view the file that requires corrections.
Retrieve your changes from the shelveset. For more information, see Suspend your work and manage your shelvesets.
In your files, correct the problems that caused the build to fail.