3049590 - Capitalized Amount are Different Even Though the Quantity is the Same

You processed two Confirmations FFF and GGG(FFF and GGG represent the ID of the Confirmation) for Production Lot DDD(DDD represents the ID of the production lot).
Confirmation FFF is the standard confirmation for raw material AAA(AAA represent the ID of the material).
Confirmation GGG is an adjustment confirmation for raw material AAA.
The quantity of the two confirmations is only different in positive and negative, and the absolute value is the same. For example, -25,846 ea and 25,846 ea.

Between these two confirmations, there is no other posting for raw material AAA.

But you find that the Capitalized Amount (posting amount) of the two confirmations are different.

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Capitalized Amount, Quantity, Posting Amount , KBA , SRD-FIN-INV , Inventory , Problem