Message type: E = Error
Message class:  FKKINV - Invoicing in Contract Accounts Receivable and Payable 
Message number: 682
Message text: Max. no. of preliminary invoices reached. Prel. inv. &3 to be reversed
You want to create a preliminary invoice to replace existing preliminary
invoice &v3&. However, the configuration of the <DS:DE.PRLINV_CAT_KK>
preliminary invoice category</> &v1& allows a maximum of &v2& successive
preliminary invoices. This limit has been reached.
In accordance with the processing rule for the preliminary invoice
category, the provisional invoice &v3& is reversed.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message FKKINV682 indicates that the maximum number of preliminary invoices has been reached for a specific business transaction or customer account. This typically occurs in the context of the SAP Convergent Invoicing (CI) or Contract Accounts Receivable and Payable (FI-CA) modules, where preliminary invoices are used to manage billing processes before final invoices are issued.
Cause: The error arises when the system has reached the limit set for the number of preliminary invoices that can be created for a particular account or transaction. This limit is often defined in the system configuration and can vary based on business requirements.
Solution: To resolve this error, you can take the following steps: Review Preliminary Invoices: Check the existing preliminary invoices for the account or transaction in question. You can do this by navigating to the relevant transaction in SAP and reviewing the list of preliminary invoices. Reverse Preliminary Invoices: If there are preliminary invoices that
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