When dropping a Jira Card onto the timeline feature on a board, I cannot adjust the start and end date because I get this message: 

Failed to update integrated cell value: Update failed; no corresponding Jira field found for com.miro.system.start_date column

Acording to Atlassian help center, there isn't a single default "start date" field that automatically fills with a specific date when a new issue is created in Jira. The due date is the only default date field.

In Jira, there isn't a single default "start date" field that automatically fills with a specific date when a new issue is created. The due date is the only default date field, and it's used to indicate when a task is expected to be completed. Other date fields, like start and end dates, are often custom fields or provided by plugins like BigPicture or Atlassian's roadmap plugin

In this case, I would like to know how to configure the start date field in Miro/Timeline.