Incident - gets a duplicate value colored blue in the category field

[Tal5]

Hi community,

I would appreciate some help with a problem I am facing.

I built a custom field in the Service form called incident category.
his job to create a parent-child relationship between Service and Category.

My Variable reference qualifier is built according to this connection on the service portal.

When I choose category and submit the form, the value that inserted into the category field in the incident is duplicated and appears in blue.

What could be the reason and how can this behavior be resolved ?

Thanks in advance to all

[Harish KM]

Hi @Tal5 check the value your passing in script is correct, this happens if the existing value of choice donot match.

[Tal5]

Thank you Harish. 

The incident_category  and the OOTB category value are the same . 

the reason I split between them , is because the system don't let me change the category type to reference. 

Could there be another reason?

[Harish KM]

Hi @Tal5 it would be helpful if you share the script and screenshot

[Tal5]

I work on an encrypted computer and therefore cannot attach screenshots.
Thanks a lot anyway for the help much appreciated