>If the index expression can create index keys of different length, you may get this error. What's the index expression?
>
>>About month ago, in different customer sites, message
>>Index tag ... is corrupted. Plese rebuild index starts to occur.
>>
>>Reindexing removes this message for a while but it occurs again and again.
>>Users can ignore this message and in this case last added records are not found
>>if index search is performed by this index.
>>
>>VFP9 application is running for years without this message.
>>It started to occurs about month ago in 3 different customer LAN networks.
>>In one site LAN server is windows 2012 server so opportunistic locking cannot disabled probably.
>>
>>How to fix or diagnose the isse ?
>>Is there some windows automatic update which caused this ?

Index epression is

INDEX ON toode tag TOODE


and toode type is char(20)