An error condition can occur because a command could not complete successfully or because of a mistake in a PML Macro or function. The presence of an error normally has three effects:

The 46 is the module or program section which identified the error and is the error code itself is 28.

If the input line had been typed interactively that is the end of the story. However, if the input line was part of a PML Macro or function the error may optionally be handled.