Filtering issues by custom field value in JIRA REST API

[Jesper Lund Stocholm]

I can get a list of issues of type "Epic" with the following endpoint:

https://<myorg>.atlassian.net/rest/api/2/search?jql=issuetype=Epic

How do I construct the jql such that I can get a list of issues where a custom field has a particular value?

I have added a custom field of type "short text" with name "Power PPM Identifier". The internal name of this field is 

customfield_10032

If I query the REST API for a particular Epic, I can see the value like this:

"customfield_10032": "6de4d40d-0ba2-4a8c-bf04-2642d62768f9",

I would have imagined that I could construct the jql like this:

https://<myorg>.atlassian.net/rest/api/2/search?jql=customfield_10032=6de4d40d-0ba2-4a8c-bf04-2642d62768f9

But when I send that to the REST API, I get this error: 

{


    "errorMessages": [

        "Field 'customfield_10032' does not exist or you do not have permission to view it."

    ],

    "warningMessages": []

}

How can I write my jql such that it filters by the value of a custom field?

[David Bakkers]

https://<myorg>.atlassian.net/rest/api/2/search?jql="Power PPM Identifier[Short text]" ~ 6de4d40d-0ba2-4a8c-bf04-2642d62768f9