E2202 Required package '%s' not found (Delphi)
Go Up to Error and Warning Messages (Delphi)
The package, which is referenced in the message, appears on the package list, either explicitly or through a requires clause of another unit appearing on the package list, but cannot be found by the compiler.
The solution to this problem is to ensure that the DCP file for the named package is in one of the units named in the library path.