How should I ascertain whether an HTTP 400, that is reported by DAVx5, every time it polls a specific ICS file, is its fault, or [the] NextCloud [provider]'s?

[rokejulianlockhart]

@jtr, thank you! That at least correlates this with:

1. @avanc

   Calendar object with uid already exists in this calendar collection.

2. @toad

   Calendar object with uid already exists in this calendar collection.

3. bugs.kde.org/show_bug.cgi?id=406917#c0

4. bugzilla.mozilla.org/show_bug.cgi?id=1717401#c12 ^[1]

1. @demlak

   Deleted calendar object with uid already exists in this calendar collection.

2. @sisim

   Sabre\DAV\Exception\BadRequest: Calendar object with uid already exists in this calendar collection.

3. @ChArtem

   Sabre\DAV\Exception\BadRequest: Calendar object with uid already exists in this calendar collection.

4. @sharbich

   Deleted calendar object with uid already exists in this calendar collection.

If so, this might be mitigated with:

Import: check if UID already exists, check which one is newest and update if necessary.

However, they stipulate that the current verification mechanism is intra-calendar.

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1. bugzilla.mozilla.org/show_bug.cgi?id=1993382#c0 ↩︎