Adapt the symbol to the package
Electric connection between pins and pads are made by identical pin and pad numbers. Additionally, you can give names to pads. In most cases alphanumerical names in BGAs or connectors: A1, A2,...A10, B1, B2, etc. They are numbered internally with respect to the name, for example: the pads named A1 to A10 get the numbers 1 to 10, the pads named B1 to B10 get numbers 11 to 20 and so on.
It is often useful to have those pad names displayed in the schematic too. This is what this function does. It adapts the pad names to the pins of the symbol. If there are no pad names given, this function won't have an impact.
Ja=Yes, Nein=No