SAP Note 12135 - Message AA647/AA648 during old assets data takeover.

Symptom

During the old assets data takeover with RAALTD01 / AS91 / AS92, error messages AA647 / AA648: 'Net book value positive/negative in area & at fiscal year start' is displayed.

Cause and prerequisites

Error in the transferred depreciation values.

Solution
If possible, you should correct the depreciation values in the old system or directly during the transfer.
If this is not possible due to certain reconciliation reasons, you can allow negative / positive net book values for the areas in question in depreciation area Customizing.
After the data transfer, you can correct the values with correction postings.
For the next year-end closing, you definitely have to check the net book values via an ABAP/4 !!!
Then you can reset the areas again in Customizing.

Key word: RAALTD01 AA647