Many UNIMARC installation uses the authorized value "ETAT" (present in default Koha but not used by default) instead of "NOT_LOAN". This is not taken into account in the preservation module. This can lead to invalid value when field 995$o (status or not for loan) is filled by Koha with a value in the authorized value "NOT_LOAN" that is not present in the authorized value "ETAT" that is mapped to the 995$o. To reproduce : O- On a UNIMARC Koha 1- Add some values in the authorized value ETAT 2- Make sure the authorized value NOT_LOAN contains at least a value that is not in ETAT. 3- Update the Default bibliographic framework field 995, subfield o to use the authorized value ETAT. 4- Activate the preservation Module with the system preference PreservationModule. 5- Select a value that is in NOT_LOAN but not in ETAT in system preferences PreservationNotForLoanDefaultTrainIn and PreservationNotForLoanWaitingListIn. 6- Go in the preservation module 7- Pick an item with an emtpy 995$o and add this item to the waiting list 8- Modify the item, check that the 995$o now contains an invalid value in field 995$o, the value in the field is followed by "(Not an authorised value")