MB5B and s_p99_41000062 Difference in Stock & value

HI,

We are comparing the two reports MB5B and s_p99_41000062, we are getting the differnces in quantity & value, but when we compare the reprot MB5L and s_p99_4100006 both quantity & values are matching.

Please help us to know, why we are getting the diffences.

Note: We have activated the Material Ledger & we maintain Standard Price & MAP Price also.

With regards

Jagadish