A Public folder sychronization job fails with the following lines within the target log:
PowerShellCmdExec::Init TraceMsg 6224 Connect to server '<servername>. Username: '<domain>\qmm.exchange.serviceAccount'.
MailImport::ImportFolder Informational 1410 Restoring folder 'SubFolder1' from the PST File (SourceKey: ...082B000012FD1E29').
CFolder::CopyFromPST Error -2147467259 The client operation failed. - MAPI_E_CALL_FAILED (Microsoft Exchange Server Information Store) File: 'aeMAPIFolder.cpp' Line: '2490' (Folder: 'SubFolder1', SourceKey: '...000012FD1E29')
(Folder: 'Test Folder', SourceKey: '0C12486C5E8C5145BD431234E4C7BF7C00001BD09C29')
MailKernel::ImportPF Error 2031 Cannot copy the folders' hierarchy.
MailKernel::ImportTarget Informational 2049 Current '\PublicFolder1\QMMTesting' (Server: 'a4838d8c-f021-47a6-b109-a4cb@<domain>.ca', SourceKey: '0C12486C5E8C5145BD431234E4C7BF7C00001BD09C29').
MailImport::ImportMessage TraceMsg 1411 Restoring message '1110B6E65020E249B75F3AC89443082B000012FD1A0F' from the PST File.
MailImport::ImportMessage TraceMsg 1411 Restoring message '1110B6E65020E249B75F3AC89443082B000012FD1A0E' from the PST File.
AM MailImport::ImportMessage TraceMsg 1411 Restoring message '1110B6E65020E249B75F3AC89443082B000012FD1A0D' from the PST File.
MailImport::ImportMessage TraceMsg 1411 Restoring message '1110B6E65020E249B75F3AC89443082B000012FD1A0C' from the PST File.
MailImport::ImportMessage TraceMsg 1411 Restoring message '1110B6E65020E249B75F3AC89443082B000012FD1A0B' from the PST File.
AM MailImport::FinalizeMessageSync TraceMsg 2141 Copied 5 message(s), average 0.728 message(s) per second. Elapsed time 6 second(s).
MailContainer::GetNextFolder Warning 1704 Target folder not found. Probably it was deleted or has not been synchronized yet.
The root of the public folders heirarchy may start to build on the target, but the sub folders will not be created and the client operation fails.