As per my requirement I want to show blank value in choice field, but SharePoint won’t take space as a valid option. So we can use ASCII code.
Method1: We can use Unicode character that does not print nothing. I tried with U+205F & it’s working as expected. To use this character please check the below steps.
1. Navigate to Start -> run -> charmap
It will open Character Map Window.
Choose Font: Calibri, Drag down the cursor & select black check the code finally click copy the code
Paste the code in choice field and save.
Now check blank field.
It’s working as expected.
Method 2: Use ASCII code 0129. It is empty character that SharePoint will accept as a valid option. It will appears empty on dropdown list. Hold down the ALT key and type the number 0129