Troubleshooting with the use of "natural keys" in place of surrogate foreign keys in AIF Document Service

Hi everyone ,

in AX 2012,The document services framework replaces a surrogate foreign key (SFK) with the natural key for a specific table.

I trying to updtae a ledgerGeneralJournalService, which is a document service. I add in the table LedgerJournalTable and the query axdLedgerGeneralJournal a new field which is a SFK on RecId of the table OMOperatingUnit.  The replacement key of OMOperatingUnit table is OMOperatingUnitNumber.

However, when i update my document service with update tools of AIF document service, the Framework doesn't change the SFK by the natural key of OMOperatingUnit table.

any idea to solve my problem?

 best regards!