What happens to the data source when it is published regarding level numbering?

When a data source is published, it cannot be changed. This is fundamental in maintaining the integrity and reliability of the data that is shared and utilized by users after publication. Once the data source undergoes publication, any modifications to its structure, including level numbering, must be avoided to ensure consistent reference and access to the data. Changes at this point could lead to confusion, data integrity issues, or misalignment in analyses that rely on the stability of the published data structure.

Other options suggest various degrees of potential changes to the data source, which would compromise the accuracy and reliability intended at the time of publication. For users working with published data, it is crucial to rely on a stable and unaltered source to ensure that their analyses and applications can depend on a consistent framework.