You run a release upgrade with SUM and when this upgrade finished you noticed that some indices in customer range name, Z indices, are not longer on the database.
To determinate if you run a a release upgrade (or switch upgrade) you should have a look into the DETMAINMODE.LOG file. You shoud see that the main operation mode is EXPORT.
Release upgrade or Switch upgrade
missing indexes, indexes lost, switch upgrade , KBA , BC-UPG-TLS-TLA , Upgrade tools for ABAP , How To
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