Diagnosis
For line item &V1& &V2&, 999 subitems have already been created as a
result of partial clearing of the splitting of the items in documentchanges. You cannot create further subitems. Processing terminates.

Procedure
For the remaining open subitems, you can only carry out partialclearing. If possible, you should clear the remaining receivablecompletely and post it to an interim account. In a second step, create anew receivable document debited to the interim account. You can thencarry out partial clearings for this document.
Alternatively, you can set a clearing lock in the remaining open itemsof the line item &V1& &V2&, post incoming payments on account, and carryout complete clearing when the incoming payments are complete.