In Synatic, the data is passed to the next step one record at a time. In order for the records to be batched after a control step, the Sort step is used.
NB: Please note that our development team is working on developing a new step to batch the records.
Illustrated in the images below is an example of a Parallel control step where the records are being filtered and going into 2 buffers. The data is then going to a sub-flow where the Buffer Query step is the source and it’s pulling data from both of the buffers in the Parallel control step.
A blank Sort step is used to batch the records after the control step as shown in the image below.