Occassional double workitem for BUS2081

Our invoice workflow is triggered from transaction OAWD and starts an object type BUS2081 method CREATE. Occassionally (once every 150-200 invoices) a workitem is created twice for a single invoice, obviously causing problems in further processing. Although we cannot replicate the error manually, it seems to happen only if a large batch is processed at once.

On another forum I found a similar problem Double" target="_blank">http://mailman.mit.edu/pipermail/sap-wug/2003-June/009594.html">Double Workitems or Events Created that suggests a problem in the SAP BASIS-package like locks or TFRC-errors, but on 4.6c.

Has anyone experienced similar problems and found a solution, i.e. by implementing an OSS-note?

Workflows are running on R/3 4.7, BASIS release 6.20 level 052.

Cheers,

Jasper Veltman