Cancellation Material Document-MIGO Problem

Question

Hi All
I done Goods Receipts (105 Movement) For material quantity =30 in date 27.08.2009 After that I haven't done any goods issue
for the same material .Now I am trying to cancel material document ( 106 Movement)  in the same date( 27.08.2009)  of goods receipts  But
system is given - Error Deficit of SL Unrestr. prev. 15 NO : 600538 1001 0001
Message no. M7021
But when I am checking in MB5B for date 27.08.2009 it is showing Stock of 36 quantity . then Why system is issuing this error massage if stock is there in that date
please provide solution

Answer 1

Error Deficit of SL Unrestr. prev. 15 NO : 600538 1001 0001
the PREV in this message indicates that SAP is checking previous period stock. SAP does not do this daywise. It just looks into table MARD field VMLAB.
In case of a batch managed material it is checking the stock in table MCHB field CVMLA
It just means that you do not have enough stock at the end of the last period. Of course you have to have enough stock in current period to, to be able to goods issue this quantity.
So you either change the goods issue date to a date in the current period, or you have to get stock into your previous period first.