Order &1 difference for receipt date: &2(APO) <-> &3

What causes this issue?

Order &V1& for material &V4& has a different receipt date in SAP APO and
SAP R/3:
Receipt date in SAP APO: &V2&
Receipt date in SAP R/3: &V3&

How to fix this error?

You can rectify this data inconsistency by choosing <LS>Send to R/3</>.
Note that the system compares the receipt date of the primary product
without taking into account the goods receipt processing time between
SAP APO and SAP R/3.
Note the following if this message is issued for production/process
orders:
In SAP APO, if the receipt date of the primary product deviates from the
end date of the last activity of the order (for example, due to an
<DS:DE./SAPAPO/OFFCO>offset</>, or scheduling at the end of a fixed
block), the receipt date always identifies this as inconsistent. You
cannot rectify inconsistencies of this type by using the reconcile
provided in the <LS>Execute Comaprison/Reconciliation</> transaction (
<LB>/SAPAPO/CCR</>).
In this case, you should deactivate the receipt date comparison.
Alternatively, you can activate the order end date comparison if the
primary product is assigned to the final operation.

Procedure for System Administrators

You can use the Business Add-In (BAdI)
<DS:SIMG./SAPAPO/CIF_DELTA3>Enhancements Comparison Report</> (
<LB>/SAPAPO/CIF_DELTA3</>) to deactivate individual comparisons.
In SAP Note 645597, you can find example coding with which you can
activate the order end date comparison.

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.