Unable to blank out an URL type attribute: URL type attribute has invalid encoded characters

Products

• Clarity PPM On Premise
• Clarity PPM SaaS

Issue/Introduction

You are unable to blank out an URL type attribute in MUX as you get an error: URL type attribute has invalid encoded characters

STEPS TO REPRODUCE:

1. Create an attribute with datatype URL
2. Add the attribute to a blueprint
3. Open a project associated to the above blueprint and enter a valid URL into the field 
4. Remove the URL value

Expected result: The URL can be removed without errors.
Actual result: An error message appears: URL type attribute has invalid encoded characters. After a page refresh the deleted value reverts back

Environment

Clarity PPM 16.X

Cause

This is caused by DE71344

Resolution

This is fixed in 16.2.0

Workaround:

Nullify the value on the grid

OR

Add a hyphen (-) or similar instead of leaving the field blank