The phrasing "..few amount of network incidents.." is a bit odd.
There is a singular module defined in the I-D, but the abstract says plural "modules".
Recheck the reference at "L3VPN services related with the interface will become unavailable [I-D.ietf-ippm-pam]" or expand the text to correlate with the reference.
BCP14 template is repeated twice in Section 2
Section 7, please regenerate the tree, as it does not match the YANG module. For instance there is no leaf called "csn"...
Section 7.1 claims that there are two YANG modules "ietf-incident-type" and "ietf-incident" but the actual module in section 8 is a merged one.
Section 7.{4,5}, some text needs to be added on the asynchronous nature of these RPC and how the incident client would learn about the output of these rpcs?
Section 8, update the WG details in the YANG module; the yang file formatting is off (use this command "pyang --ietf --lint -f yang --keep-comments --yang-line-length 69 " to fix that);
Is cross-domain == multi-layer (Section 3.3)? Think about making that clear. Perhaps you should differentiate between inter-domain and inter-layer?
Is cause-name some well known cause or just free form string? (same for incident's name)
Please add a description for what are root-events and how it relates to root-cause
Section 9, security consideration is just the template, actual analysis is missing
Section 10, please fix the formatting of the IANA registry