Details
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Bug
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Resolution: Fixed
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High
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5.4.0, 5.3.4
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None
Description
This issue is derived from EZP-22308 and EZP-23894.
Basically, due some known bugs, it's possible that sort_key_string is left empty what may have effects in searches trough the API, for example.
Even the known bugs that could leave empty sort_key_strings being already fixed, the sort_key_string fields will remain empty what will result in problems anyway.
That said, it's important to handle somehow the problem of empty sort_key_string, being trough some kind of fix in the code or and update script.