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HTTP error during scm checkin

Hello,
I'm trying to checkin some files to Jazz [near 15000 files with 150Gb in total], and during the checkin step [after near 3 hours of checkin] I'm receiving an HTTP error. I tried 5 times, and every time this error message is appearing after ~3 hours.
CRJAZ0099E An HTTP error occurred when this URL was being accessed: /ccm2/service/com.ibm.team.filesystem.common.IFileContentService/content?hashcode=QmKd5XP3UNGVlzNDfzQcE0oHDQ1oiXW-TjSHj-gzhWM&lineDelimiter=&encoding=Cp1252. Error details: java.nio.channels.AsynchronousCloseException.\r\n Change is not a deletion: ADDITION /Eng_System/RTOtask 28546297.7z [UUID _3WxXsA4kEe2_nL_hOZL2Hg]\r\n Change is not a deletion: ADDITIONThe error is repeating this message for every file that was not checked-in. Those files doesn't have something special, and are not big in size.
Does anyone have any idea for fixing this problem ? Thanks !
One answer

I would suggest to check in smaller subsets of files. Otherwise, please open a case with support.
Comments

It sounds like you are trying to check-in 150GB in one change set. I agree that multiple change sets are better (plus it makes it easier for others to accept individual change sets at a time vs one giant change set).
Related to this topic, it's generally bad practice to use SCM to check-in large binary files (vs text based files where versioning makes sense) unless using an external content repository. See: https://jazz.net/library/article/90403
(Whether or not this is the case here, it's worth me pointing out his article here in case others stumble on it).