++++ 1 . Agriculture - Common organization of the markets - Milk and milk products - Premium for the non-marketing of milk - Transfer of a holding by a producer having entered into undertakings not to market milk - Forced sale - Inclusion - Purchaser not willing to take over undertakings - Force majeure - Absence - Limits ( Council Regulation No 1078/77, Art . 6 ( 1 ); Commission Regulation No 1391/78, Art . 9 ( 4 ) and ( 12 ), as amended by Regulation No 1799/79 ) 2 . Agriculture - Common organization of the markets - Milk and milk products - Premium for the non-marketing of milk - Undertakings entered into by the producer - Partial failure to comply - Consequence - Premiums to be refunded in their entirety ( Council Regulation No 1078/77, Arts 6 ( 1 ) and 11 ( 1 ); Commission Regulation No 1391/78, Art . 9 ( 1 ) )