Thanks for your reply!
Today I updated from 7.00 to 7.03 per patch, but the error is still exists.
I also took a look at the gateways, but all (implicit & explicit) are enabled. Or is there an other way to check the status?
Devices & Media > Environment > Devices > Store_1 > Gateways
I tried a backup via the explicit gateway, which worked, but I found some points where I can (have to???) activate the server-side dedup.
Devices & Media > Environment > Devices > Store_1 > Gateways > Store_1_gw1_SID > Settings > Advanced > Settings | Server-side deduplication
and ...
Backup > Backup Specifications > SAP R/3 > SID > Destination > Store_1 > Store_1_gw1_SID > Properties | Server-side deduplication
If I activate server-side dedup via Devices & Media, its not automatically activated the settings in the backup settings.
Is that correct and why do I have to activate the server-side dedup twice?
Back to my main question, is there still an other setting that I have to activate, to use source-side dedup with 7.03?
Are the lab cases open for public?
Thanks!
Tobias