## Description
We have `Z99/Quote` specified as the type of some error type keys (examples below), but it's not clear whether this has been done consistently. Getting these types right is a prerequisite to doing some further work on errors.
[x] Clarify and specify our criteria for using `Z99/Quote` as the type of error type keys.
[x] Based on those criteria, update error-type ZObjects as needed (i.e., adding or removing the use of `Z99/Quote`).
[x] E.g., consider adding quoting to: Z537K1 (//debatable, but leave for now//), Z508K2 (//already quoted//), Z518K2 (//okay as is//), Z531K1 (//already quoted//)
[x] Update utility code (which creates `Z5/Error` ZObjects) as needed.
[x] Update all other relevant function-schemata code & tests as needed.
[x] Update all relevant orchestrator code & tests as needed.
[x] Update all relevant evaluator code & tests as needed.
[x] Update all relevant wikilambda code & tests as needed.
Possible criteria for quoting error type keys (taken mostly from discussions on slack):
- Quote where we suspect the input is invalid in some way
- But do not quote Z1K1 by itself. If its value is in doubt, quote the entire object that contains it.
- Quote resolvable keys that might be ingested as the input to a function
- Quote when resolving a value might cause a catastrophe (e.g. infinite recursion)
- Quote the values of any key that might get a value containing `Z7`, `Z9`, or `Z18`. (See also T323158).
- Quote more things if it lets us make backend APIs more consistent
**Examples of possible inconsistency**
- Some error type keys called `object` or `whole object` are declared as type `Z99/Quote`, but others are not. (//Currently only true for "object type mismatch", and that's okay.//)
- `Z507K1/function call` of `Z507/error_in_evaluation` is not declared as `Z99/Quote`, but the method createZErrorInstance() in errorFormatter.js (function-schemata) does quote values of `Z507K1/function call`. (T349026) (//Corrected//)
- createZErrorInstance() also quotes values of `Z507K2/propagated error`, but other keys named `propagated error` are not quoted anywhere, or declared to be `Z99/Quote`. (//Corrected//)
**Desired behavior/Acceptance criteria (returned value, expected error, performance expectations, etc.)**
[x] The uses of `Z99/Quote` in error types should be consistent.
[x] Error-creation/handling code should be consistent with error type declarations .
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## Completion checklist
* [ ] Before closing this task, review one by one the checklist available here: https://www.mediawiki.org/wiki/Abstract_Wikipedia_team/Definition_of_Done#Back-end_Task/Bug_completion_checklist