Hi Raj,
E1STPOM contains the change number. Have you distributed Change numbers by CC92? Is that change number available in target system?
Also check the ALE user in the target system has the special authorization for the change of history requirement BOMS. Set the user's authorization C_STUE_NOH:NOHIS = YES.
Also refer OSS note 515222 - Creating BOMs with history requirement
Regards,
R.Brahmankar