Phase &1 for order &2: Difference in work center assignment

What causes this issue?

Different work centers/resources are assigned to phase
&V1& for order &V2& in SAP APO and SAP R/3:
Work center in SAP R/3: &V3&
Resource in SAP APO: &V4&

How to fix this error?

Rectify this data inconsistency by choosing <LS>Send to APO</> or
<LS>Send to R/3</>.
If the inconsistency reported here was caused by a change in work
center in SAP R/3, you cannot rectify it by resending the order
to SAP APO.
Moreover, the retransfer (assuming this is set up in Customizing in SAP
APO) will cause the original work center in the operation/phase
in SAP R/3 to be resaved. (<LS>Integration with SAP Components ->
Integration of SAP SCM and SAP R/3 -> Basic Settings for Data
Transfer -> Change Transfer for Transaction Data -></>
<DS:SIMG.CIFPUBV1>Maintain Object-Specific Settings</>)
Note that the change to a work center in SAP R/3 can only be mapped in
SAP APO if alternative modes are maintained in the PPM for the
relevant operation/phase. You can do this by classifying operations/
phases and work centers or by
using the BAdI implementation from SAP Note 629366.


&DEPENDENCIES&
INCLUDE /SAPAPO/BEDARF OBJECT DOKU ID TX

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.