In the request body, you can use a ',' comma separator to provide a list of event IDs that need to be reprocessed.
Run Partner REST API enhancements
You can include the advanced session properties of a mapping task in the Run Partner API that you use to run partner flows. Use the mctAdvSessionProperties object to define key-value pairs of advanced session properties.
For example, you can configure the amount of buffer memory that is used to move a block of data from the source to the target in the advanced session properties.