KB81113 - ISSU upgrade of SRX 1500 cluster is failing when upgrading to 21.4R3-S6 or newer versions

⌂ KB81113 ISSU upgrade of SRX 1500 cluster is failing when upgrading to 21.4R3-S6 or newer versions Version 2026-06-19 (paste date) Latest Versions [juniper.net]