Journeys - Assign Journey via HDL - "Checklist ID is invalid"

Summary:

Requirement to assign Journey to large number of employees. Most viable option available currently looks to be via an HDL.

However, we are encountering issues when attempting to test the HDL solution.

Content (required):

METADATA|AllocateChecklist|PersonNumber|ChecklistInstance|TemplateChecklistName|TemplateChecklistCategory|Country|ChecklistName|ChecklistCategory

MERGE|AllocateChecklist|123456|1|Data Hygiene|Person| |Data Hygiene|Person

• Title of Journey = 'Data Hygiene'
• Person Number = '123456'

Following attempt to upload, receiving Failed Objects return, with an error of "The checklist ID is invalid'

Not sure where to locate the Checklist ID, and where it should then be entered on the HDL script.

Version (include the version you are using, if applicable):