Validate a text field prevent duplicate ticket with a custom field value Edited

[Andrey Miranda Diaz]

Good morning,

I would to know if is possible to create a validation about a custom field (text field).

For example :

I need to create with scripts runner a validation that if the custom field (ID)  the value exist in another ticket of the project show a messaje (the ID already exist in issue).

or if the ID no exist create the ticket . 

[Nic Brough _Adaptavist_]

I think I want to question the need for this.  I can't imagine a good case for "prevent someone creating an issue if they have mentioned an existing issue in the text of it".  Quite the opposite - I have *definitely* raised issues saying stuff like "this is a bit like xyz-123, but it's slightly different because..."

Could you explain the use case?

But to get started though, the pseudo-code you should have a quick think about for this would be:

• Read text field
• Parse it for anything that might be a Jira issue key
• Run JQL "key = <potentially found key>" (see https://library.adaptavist.com/entity/perform-a-jql-search-in-scriptrunner-for-jira for a sample)
• Fail validation if the JQL has a result

[Andrey Miranda Diaz]

Thanks for you response,

I have completed the request .

regards