The reversing entries were not generated in FIFO valuation.

Hi experts.

I would like to ask you about  FIFO.

We are now preparing for switchover from old system to SAP.

As part of it , we created stocks as a test, and run FIFO valuation by using MRF3 and MRF1.

However MRF1 was somehow terminated in progress, and went back to the initial screen before running.

I confirmed the journal entries generated by the FIFO in FBL3N, but reversing entries which also were supposed to be generated in the 1st day of the next month of the target month of FIFO were not generated .

I thought the most conceivable cause of this phenomenon is that we have not run FIFO valuation in previous period.

Let's say the stocks for certain material was created in January and February, and I did not run FIFO (although it is supposed to be run).

Then I opened new posting period(March), run FIFO valuation this time, and what is written in the title was happened.

Could that be the cause of the above phenomenon ?

I would like you to teach me why reversing entries were not generated.

Any help is welcome.

Best regards.

Takeshi.