The full error as reported by the configuration wizard:
Processing step 'QBM DBQueueProcessing (install and start dbqueue processors)' failed.
10 - Sql command failed.
[810023] Error during execution of statement: exec QBM_PIndexCreateGenerated '%'
[810143] Database error 50000: re-throw in Procedure QBM_PIndexDropRedundant, Line 5
[810143] Database error 50000: re-throw in Procedure QBM_PIndexDropRedundant_i, Line 10
[810143] Database error 50000: re-throw in Procedure QBM_PIndexCreate, Line 25
[810143] Database error 50000: detected in (SRV=SQL01, DB=D1IM) Procedure QBM_PIndexCreate, Line 9
[810143] Database error 50000: Indexname DialogDeferredOperation_TargetDate is too long.