How can I assign a number when importing an issue using a JSON file

[INNTAEK]

When importing an issue from a JSON file, I want Jira to generate it with a specific desired number.

Please explain how to achieve this

[Tomislav Tobijas _Koios_]

Hi @INNTAEK ,

When talking about "specific desired number" do you mean issue key?

If so, you can refer to the following official support documentation: Import data from JSON | Specific JSON File Examples 

Cheers,
Tom