Differences found for &1 pieces of data for simple buckets

What causes this issue?

Differences were found in the content of non-fixable data buckets per
time series and key figure when the extracted DP data was compared with
the data in liveCache after the upload.

System Response

The difference is logged as an error.

How to fix this error?

The difference that was found indicates that a serious problem occurred
during the upgrade or the upload/download process. You must assume that
the data in the target system contains errors.
For more information, see the
<DS:REPN./SAPAPO/OM_UPGR_COMPARE_DETAIL>technical detailed log</>.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.