Number 05/2021
Issued on 12/05/2021
Valid until UFN
Issued by LARA Team
Issue: ACA incompatibility with NM 25.0
Affected software: LARA Server
Description: When generating an AUP/UUP in LARA and exporting it into ACA format, the exported file will not be correctly imported into CIAM via CHMI due to changes in the ACA format introduced by NM25.0. This can be noticed by inspecting the fields Responsible Unit and FIR/UIR of the imported AUP.
This incompatibility affects as well ACA import into LARA, when CHMI 17.0 (NM25.0) is used to produce the ACA file.
Note that all current LARA releases (V3.0 / V3.1 / V3.2) are affected as, unfortunately, the backward compatibility with NM24.0 is not implemented in NM25.0.
Note also that provision of AUP/UUP in ACA to CADF is considered as one of the backup solutions in the AMC-NM Agreement.
Reproduction steps:
1) – Create an AUP in LARA.
– Export the AUP in ACA.
– Import the AUP into CIAM using CHMI 17.0.
2) – Create an AUP using CHMI 17.0
– Export the AUP in CHMI using ACA format.
– Import the ACA AUP in LARA.
Temporary workaround: As a temporary measure, the AUP Reader add-on can be used to generate the ACA file in NM25.0 format. Refer to the instructions described below for further guidance
Fix: A software fix will be included in the future LARA V3.2.3 patch.
A LARA Notice is issued and distributed among LARA Users to inform the LARA Community about observations, important changes and related limitations in regard to the operational use of the LARA Software. Please ensure that relevant personnel is informed about this LARA Notice. In case of any questions, please contact the LARA Team on lara@eurocontrol.int.