ETL - Tips on propagating port attributes

It is a good way for us to propagate the other transformations' related ports when we give some changes to one transformation's port(such as the port name, datatype, precision, scale, and description...).

But please note, The Designer does not propagate changes to the following mapping objects:
1)Unconnected transformations;
2)Reusable transformations;
3)Mapplets;
4)Source and target instances;
5)SDK Source Qualifier;

and if you want to get more inforamtion about propagating port attributes, please refer to the bookshelf.