CK II - [2.8.3.3] [SAHQ] Unable to Request Invasion of an empire who should be a valid target

[jonjowett]

One line summary of your issue
[2.8.3.3] [SAHQ] Unable to Request Invasion of an empire who should be a valid target

Game Version
[2.8.3.3] [SAHQ]

What expansions do you have installed?
All of the above

Do you have mods enabled?
No

Please explain your issue is in as much detail as possible.
Background: I installed my dynasty across a large portion of the map, including China and Tibet. Then I made them independent, although I watch them carefully and help out when I can. Recently, the (Hindu) emperor of Bengal has been conquering eastern Tibet one duchy at a time, via repeated holy wars. My relatives in this area are now basically doomed.

I would like to Request Invasion for the empire of Bengal - shattering that realm would help nicely. However, the emperor of Bengal is not showing up in the list of possible invasion targets, and I can't tell why.

Here's the relevant part of the code for the Request Invasion decision (I believe third_party_potential controls who shows up in the list). I have added comments describing how I believe each line should be evaluated for the emperor of Bengal (referred to as "he"/"him"/"his").

        third_party_potential = {
            show_only_failed_conditions = yes
            FROMFROM = {
                show_scope_change = no
                NOT = { character = ROOT } #####Should be fine - the emperor of Bengal is not my character
                OR = { #####Should be fine - he's an emperor
                    tier = EMPEROR
                    tier = KING
                }
                num_of_count_titles_in_realm = 40 #####He has many more than 40 counties
                is_within_diplo_range = ROOT #####He is within my diplomatic range - see screenshot
                custom_tooltip = { #####He is not a religious head; also, Hinduism can't have a religious head
                    text = chinese_request_invasion_rel_head_tt
                    NOT = {
                        any_demesne_title = {
                            higher_tier_than = DUKE
                            controls_religion = yes
                        }
                    }
                }
                custom_tooltip = { #####He has not successfully invaded China; only the Mongols and myself have done so - see screenshot
                    text = chinese_request_invasion_defeated_china_tt
                    NOT = {
                        has_character_flag = defeated_china
                    }
                }
            }
        }

I also checked third_party_allow just in case (even though I believe this is just the condition that enables the "Send" button):

        third_party_allow = {
            show_only_failed_conditions = yes
            FROMFROM = {
                in_revolt = no #He is not even at war
                NOR = {
                    has_non_aggression_pact_with = ROOT #####He does not have a NAP or alliance with me - see screenshot
                    is_allied_with = ROOT
                    liked_by_offmap = { #####China currently likes Mesoamericans. He is Bengali.
                        type = offmap_china
                    }
                    is_tributary = { suzerain = ROOT } #####He is not anyone's tributary
                    has_character_modifier = peace_deal_with_china #####He does not have a peace deal with China - see screenshot
                }
            }
        }

All in all, this is a mystery to me. I believe it should be possible to request an invasion against this guy, but the game isn't allowing me to do so, which I believe is a bug.

Whether this is WAD or not, it would be very helpful if you updated the interface to make it easier to find out why someone is not a valid target. I think that this could be done relatively easily by: (1) altering the "third_party_potential" list to show all independent kings and emperors; (2) moving all failure conditions o the "third_party_allow" section, so that they can be documented by in-game tooltips.

Steps to reproduce the issue.
Load the attached save and attempt to request a Chinese invasion against the emperor of Bengal.

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