Hi,
When you get error, never delete data source.
have you any reason to delete data source?
Why you added below fields?
ZZEBELN
ZZMENGE
ZZMEINS
You got error because of enhancement, in that case simply you can delete the appended structure from your extract structure.
Already said, if your not clear about enhancement, take abaper, inform him to append BWART to your extract structure. he can do it without any problems.
Go to LBWE and see your data source. is it inactive or not.
at ecc side table - ROOSOURCE, check your data source have active or deliver version data sources.
Thanks