Working on the Classic Paladin level 12 chain.

G[2998]='FA K0120 L012 N255 RH CP A:927 T:6171 E31727'
This is a breadcrumb

G[1641]='SP FA K0121 L012 N255 RH CP A:6171 T:6171 I:1642 E31727' -- is repeatable
This is a repeatable that provides/replaces the Tome of Divinity until
G[1642]='FA K0120 L012 N255 RH CP A:100006775 T:6171 P:1641 O:2998 E31727'
is turned in.
I can't see a way to mark it as unavailable without invalidating the downstream chain.
Would you remove the P:1641 in G[1642], and then invalidate G[1641] with an I:1642?
Or is there something better?

Thanks for your time.

If 1642 is available only if you have ever completed 1641 then I believe it should be P:H1641. I assume when you have 1642 in your quest log you can still get 1641, but that when you have completed 1642 you can no longer get 1641. If this is correct I would remove the I:1642 from 1641 and I would add ODC:1641 to quest 1642.

Actually, I just realized after thinking about it that the ODC: code is not going to help because 1641 is repeatable. First of all, I would suggest that if 1641 is meant to provide an item it might not be available if you have that item. Therefore, you should at a minimum have a P:k key for that item to be not possessed. Secondly, if the completion of 1642 makes it is 1641 will never be available, I think we need the concept of P:h1642 for 1531 which would be "quest has never been completed", which does not exist at the moment.

Thanks, but that does not work. 1641 is a fake quest. It is never recorded as being completed/turned in i.e. it never gets into the server database. /grail continues to show it available but it is not.

There is no hidden quest, using /grail backup, /grail compare.

Normally I would I: it but if I do so, the whole quest chain is marked as unobtainable.

It is available but fails "Unique", if you have the item, so P:k may not be appropriate.

1641 is the repeatable pseudo quest that gives and, if needed, replaces the Tome.

The only thing that I can think of is to special case it and either have another version of I: which does not flow down the chain. Or something like that. I am unsure if your P:h would work as the quest is not "real".

Thanks and sorry. Blame Blizzard.

Incidentally, 1645 is the dwarf equivalent, 1641 being the human version. Same problem.

Latest data. The ODC, I:B are to reflect what happens with the quests.

Human version

G[3681]='FA K0120 L012 N255 RH CP A:5149 T:6171 I:B2998 ODC:2998 E31727'
G[2998]='FA K0120 L012 N255 RH CP A:927 T:6171 I:B3681 ODC:3681 E31727'
G[1641]='SP FA K0121 L012 N255 RH CP A:6171 T:6171 E31727' -- is repeatable
G[1642]='FA K0120 L012 N255 RH CP A:100006775 T:6171 P:1641 O:2998,3681 E31727'
G[1643]='FA K0120 L012 N255 RH CP A:6171 T:6174 P:1642 E31727'
G[1644]='FA K0130 L012 N255 RH CP A:6174 T:6174 P:1643 E31727'
G[1780]='FA K0130 L012 N255 RH CP A:6174 T:6171 P:1644 E31727'
G[1781]='FA K0130 L012 N255 RH CP A:6171 T:6173 P:1780 E31727'
G[1786]='FA K0130 L012 N255 RH CP A:6173 T:6172 P:1781 E31727'
G[1787]='FA K0130 L012 N255 RH CP A:6172 T:6173 P:1786 E31727'
G[1788]='SP FA K0130 L012 N255 RH CP A:6173 T:6171 P:1787 E31727'
 
G[1790]='SP FA K0121 L012 N255 RH CP A:6171 T:6171 P:C1786 I:1787 E31727' -- replaces Symbol of Life if lost

Dwarf version
G[3000]='FA K0120 L012 N255 RF CP A:928 T:6179 I:B2997,B2999 ODC:2997,3000 E31727'
G[2997]='FA K0120 L012 N255 RF CP A:1232 T:6179 I:B2999,B3000 ODC:2999,3000 E31727'
G[2999]='FA K0120 L012 N255 RF CP A:5149 T:6179 I:B2997,B3000 ODC:2997,3000 E31727'
G[1645]='SP FA K0121 L012 N255 RF CP A:6179 T:6179 E31727' -- is repeatable
G[1646]='FA K0120 L012 N255 RF CP A:100006916 T:6179 P:1645 O:2997,2999,3000 E31727'
G[1647]='FA K0120 L012 N255 RF CP A:6179 T:6175 P:1646 E31727'
G[1648]='FA K0130 L012 N255 RF CP A:6175 T:6175 P:1647 E31727'
G[1778]='FA K0130 L012 N255 RF CP A:6175 T:6179 P:1648 E31727'
G[1779]='FA K0130 L012 N255 RF CP A:6179 T:6178 P:1778 E31727'
G[1783]='FA K0130 L012 N255 RF CP A:6178 T:6177 P:1779 E31727'
G[1784]='FA K0130 L012 N255 RF CP A:6177 T:6178 P:1783 E31727'
G[1785]='SP FA K0130 L012 N255 RF CP A:6178 T:6179 P:1784 E31727'
 
G[1789]='SP FA K0121 L012 N255 RF CP A:6179 T:6179 P:C1783 I:1784 E31727' -- replaces Symbol of Life if lost