Hi Pranjal,
I am 50-50 whether to apply or not.
If you are not using standard functionality to derive the PR doc type how the note will be helpful but on the other hand if you have configured NB has the default doc type, then there is a possibility of this note impact.
First try to replicate the scenario and test it in dev client, applying this note or raise a OSS to SAP so they can provide you exact information.
Regards
Terence