updating custom field jira rest api

[Ankit kharola]

i have created a workflow and a transition in that where if a user wants to transition the status of issue from to do to in progress a custom field analysis should be filled and i am trying to transition the issue via rest api i am getting the custom field which is required but when i am trying to update the field i am getting an error 

Error transitioning issue: Error: Failed to transition issue: 400 Bad Request. {"errorMessages":[],"errors":{"customfield_10038":"Operation value must be an Atlassian Document (see the Atlassian Document Format)"}}   this is the resolver function 

resolver.define("transitionIssue", async (req) => {

  const { issueId, transitionId, fields  } = req.payload;

  console.log(fields, "custom")

  try {

    // Make a POST request to transition the issue

    const response = await api

      .asApp()

      .requestJira(route`/rest/api/3/issue/${issueId}/transitions`, {

        method: "POST",

        headers: {

          "Content-Type": "application/json",

        },

        body: JSON.stringify({

          transition: {

            id: transitionId,

          },

          fields : fields

        }),

      });

    // Check if the request was successful

    if (!response.ok) {

      const errorResponse = await response.json();

      throw new Error(

        `Failed to transition issue: ${response.status} ${response.statusText}. ${JSON.stringify(errorResponse)}`

      );

    }

    // Return a success message

    return { success: true, message: "Issue status updated successfully!" };

  } catch (error) {

    console.error("Error transitioning issue:", error);

    throw new Error(`Failed to transition issue: ${error.message}`);

  }

});  this is the custom field value i am getting from frontend 

{ customfield_10038: 'hello' }

[Vishal Biyani · Accepted solution]

@Ankit kharola 

What is the type of field that you are using for customfield_10038?

ADF (Atlassian Document Format) is expected for fields like description. if you are okay to have a simpler use case, I would suggest that you change the type of the field. Else you will need to follow ADF guidelines while updating the field like first field should be "version": 1, etc.

Atlassian Document Format

[Ankit kharola]

Hello sir @Vishal Biyani  the type of the custom field is Text Field (multi-line) 

[Vishal Biyani]

in that case can you try setting customfield_10038 like this and see if works for you.

"customfield_10038 ": {
"version": 1,
"type": "doc",

"content": [{
"type": "paragraph",
"content": [{
"type": "text",
"text": "hello"
}
]
}
]
}