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![MDL-16919] Administration: Allow username to contain an underscore - Moodle Tracker](https://tracker.moodle.org/secure/attachment/19044/upload_validation2.png "MDL-16919] Administration: Allow username to contain an underscore - Moodle Tracker")
MDL-16919] Administration: Allow username to contain an underscore - Moodle Tracker
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![Machine Name Can't Have Underscores [#3179779] | Drupal.org](https://www.drupal.org/files/issues/2020-10-29/action-name-space.png "Machine Name Can't Have Underscores [#3179779] | Drupal.org")
Machine Name Can't Have Underscores [#3179779] | Drupal.org
Error: The name can only contain underscores and alphanumeric characters. It must begin with a letter and be unique, and must not include spaces, end with an underscore, or contain two consecutive
![MDL-16919] Administration: Allow username to contain an underscore - Moodle Tracker](https://tracker.moodle.org/secure/attachment/19043/upload_validation1.png "MDL-16919] Administration: Allow username to contain an underscore - Moodle Tracker")
MDL-16919] Administration: Allow username to contain an underscore - Moodle Tracker
1 herbert van de sompel CS 502 Computing Methods for Digital Libraries Cornell University – Computer Science Herbert Van de Sompel - ppt download
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