==== 1. FileNotUploadedReason ====
A string containing a human-readable explanation of why the file was not uploaded.
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'''It includes:'''
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[[Category:Client|File Upload Size Restriction]]
[[Category:Mobile|File Upload Size Restriction]]
[[Category:Version 5.1|File Upload Size Restriction]]
[[Category:WinX|File Upload Size Restriction]]
==== 2. MaxUploadSizeMB ====