Dear Parvin,
Please refer to this thread MRP Exception message :- 40- coverage not provided by master plan.
Please refer OSS notes 550441 question no 06 for Exp message 40 Coverage not provided by master plan.
Exception message '40' resulted from the calculation of the ATP quantity in Transaction MD04.The calculation of this ATP quantity is not provided anymore in Transaction MD04 since it was not an "actual" ATP quantity as in Transaction CO09, but it was calculated according to a separate logic which did not take into account certain relevant parameters.Branching to the ATP quantities now leads to Transaction CO09 which considers all MRP elements, checking rule and scope of check.This instrument should be used now, here the previous exception message '40' is equivalent to a negative, cumulated ATP quantity.In Transaction MD04 exception messages '10' and '30' from the rescheduling check can also be used to determine receipt elements that are not covered.
Regards
Muhammad Umar
