after completing schematic i edit some diode pin numbers, I got error like component library is missing (i dont want to change global library). 2.- i got DRC error like net label is not connected, but i am moving the label wire also increased
You should indeed not edit the default global libraries.
If you want to change a symbol or footprint, then make a copy of it in a personal (either global or project specific) library, and modify that copy. Then use that copy in your project.
You can also work the other way. Modify a symbol or footprint in a KiCad project, and then export it to a personal library.
I do not understand what the sentence below means. It does not translate well.
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but i connected ,few pages, and if am moving the wire which is connected to the label ,the label also moving
The Label not connected to anything is a bit misleading. The actual meaning is that the net to which it is connected only has one node. The reason for this could be a misspelled label name, or wrong use of labels. Local labels for example do not connect to labels on other sheets. There may be other reasons too, I just gave some examples. It is probably easy to spot if you zip up and upload (a part of) the project.
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I have one more question for day, if am deleting some component in schematic, that should reflect in pcb layout right.in my case its not happening ,why
Eagle did work in that way, but KiCad does not. In KiCad the connection between the schematic and the PCB is only updated during the Update PCB from Schematic [F8] process. (Or the other way around with: Update Schematic from PCB).
And during this update, you have the option to delete footprints on the PCB that are no longer connected to schematic symbols.
I never used eagle, but I think the method in KiCad is better. Apparently it was quite common for eagle to delete PCB tracks when you deleted a connection in the schematic. But it is quite common to delete a wire in the schematic only because you want to route it in some other way, or with labels, and when you do this, it would mean you have to repair the PCB afterwards, while there were no actual changes.
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