What’s the difference between Unable to Push/Pull and Unsuccessful Push/Pull?

"Unable" A: If guild space does not permit it, certain Push/Pull actions cannot be executed, for example when the source guild is empty of goods or the destination guild is full of goods. (Unable to push/pull). If unable to do a particular Push/Pull action due to space restrictions, that action cannot be done and a different Guild action should be attempted. "Unsuccessful" A: In some cases a player can perform a Push/Pull and move stuff around (space does permit this) but score zero points as they did not fulfil the required Rows/Columns/etc (Unsuccessful push/pull). An Unsuccessful action allows the splitting of the Church coffer/Farmers purse but will not allow the scoring of Reeves. An unsuccessful pull does not allow the drawing of a Writ card.