With the below hardware installed, kindly confirm if we can upgrade to 22.4R3-S5 or 23.4R2-S3
RE-S-1800x4
Enhanced MX SCB 2
MPC7E
The RE model is RE-S-1800X4-16G-S & EoL announced.
Last Junos for this model is 21.2 (for 64 bit).
Pls refer to below EoL doc.
https://supportportal.juniper.net/s/article/End-of-Life-Announcement-MX-legacy-MX5-MX10-MX40-MX80-MPCs-MICs-Routing-Engines-Switch-Fabrics-and-affected-Chassis-bundles
The other cards in device are not EoL & hence can support higher versions.