If you're using MPASM error 219 is shown in the MPASM assembler help file;
219 Invalid RAM location specified.
If the __maxram and __badram directives are used, this warning flags use of any RAM locations declared as invalid by these directives. Note that the provided header files include __maxram and __badram for each processor.
You might have a bad P12F683.INC file. Updating to the latest/greatest version of MPLAB
with the newest .INC files might cure it.

If you switch to the PM asembler, and the warning goes away, it seems the problem would
be the Mchip header file, but it's hard to say without seeing the offending code.