Visual Builder Excel Plugin- Error while deleting more than 10 records

Summary:

When we try to delete 24 invoices of same contract in batch mode using Oracle Visual Builder Add-in for Excel, we get error for some requests. From the network monitor and the console log, we observed that there were 3 POST requests (10 invoices each and 4 in 3rd), sent parallely and because of parallel requests some invoices are not getting deleted giving error that contract is in use by other resource.

Content (required):

This is a very trivial use-case for end user who may want to delete 1000s of invoices at once for a contract.

·      Is it not possible to send all the delete requests(24 invoices) in a single POST request?