Large amount Invoice count

Our invoicing count amount is too large and we want to proccess those invoices with parallely. But, generating ICV and PH values are locking us. Are there any best practices to make this? Or how can we make this? any suggestion?

@pelitahmet you can onboard multiple CSIDs and each CSID will have its own sequence of ICV and PIH. Also, please note that as long as generation of invoices follows the sequence, invoices can be sent to ZATCA in any order. For example, invoice 4 can be sent to ZATCA before sending invoices 1,2 and 3.