9 uses of REQUIREMENT_ERROR in Drupal 5

color_requirements in modules/color/color.install

db_status_report in includes/database.mysqli.inc

Report database status.

db_status_report in includes/database.mysql.inc

Report database status.

db_status_report in includes/database.pgsql.inc

Report database status.

drupal_check_module in includes/install.inc

Check a module's requirements.

install_check_requirements in ./install.php

Page to check installation requirements and report any errors.

system_requirements in modules/system/system.install

Test and report Drupal installation requirements.

system_status in modules/system/system.module

Menu callback: displays the site status report. Can also be used as a pure check.

unicode_requirements in includes/unicode.inc

Return Unicode library status and errors.