23 uses of REQUIREMENT_WARNING

color_requirements in core/modules/color/color.install
Implements hook_requirements().
DbUpdateController::handle in core/modules/system/src/Controller/DbUpdateController.php
Returns a database update page.
DbUpdateController::requirements in core/modules/system/src/Controller/DbUpdateController.php
Renders a list of requirement errors or warnings.
demo_umami_requirements in core/profiles/demo_umami/demo_umami.install
Implements hook_requirements().
drupal_requirements_url in core/includes/install.inc
Returns a URL for proceeding to the next page after a requirements problem.
GDToolkit::getRequirements in core/modules/system/src/Plugin/ImageToolkit/GDToolkit.php
Gets toolkit requirements in a format suitable for hook_requirements().
install_display_requirements in core/includes/install.core.inc
Displays installation requirements.
locale_requirements in core/modules/locale/locale.install
Implements hook_requirements().
media_requirements in core/modules/media/media.install
Implements hook_requirements().
mysql_requirements in core/modules/mysql/mysql.install
Implements hook_requirements().
ProjectSecurityRequirement::getDateEndRequirement in core/modules/update/src/ProjectSecurityRequirement.php
Gets the security coverage requirement based on an end date.
ProjectSecurityRequirement::getVersionEndRequirement in core/modules/update/src/ProjectSecurityRequirement.php
Gets the requirements based on security coverage until a specific version.
requirements1_test_requirements_alter in core/modules/system/tests/modules/requirements1_test/requirements1_test.module
Implements hook_requirements_alter().
RequirementsTest::testRequirementsAlter in core/modules/system/tests/src/Kernel/Module/RequirementsTest.php
Tests requirements data altering.
SecurityAdvisoryTest::testPsa in core/modules/system/tests/src/Functional/SecurityAdvisories/SecurityAdvisoryTest.php
Tests that a security advisory is displayed.
SitesDirectoryHardeningTest::testSitesDirectoryHardeningConfig in core/modules/system/tests/src/Functional/System/SitesDirectoryHardeningTest.php
Tests writable files remain writable when directory hardening is disabled.
StatusReportPage::preRenderGeneralInfo in core/modules/system/src/Element/StatusReportPage.php
#pre_render callback to get general info out of requirements.
system_requirements in core/modules/system/system.install
Implements hook_requirements().
update_page_top in core/modules/update/update.module
Implements hook_page_top().
update_requirements in core/modules/update/update.install
Implements hook_requirements().
update_script_test_requirements in core/modules/system/tests/modules/update_script_test/update_script_test.install
Implements hook_requirements().
_system_advisories_requirements in core/modules/system/system.install
Display requirements from security advisories.
_update_requirement_check in core/modules/update/update.install
Fills in the requirements array.

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