HI Pawan,
This is possible if you create notificaiton with default unit of measure as MIN for breakdown duration.
To achieve this, you need to use exit QQMA0025.
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EXIT_SAPLIQS0_017
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Code :
MOVE I_VIQMEL TO E_VIQMEL.
INCLUDEZXWOCU21.
E_VIQMEL-MAUEH = 'MIN'
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Regards,
Amol