Message type: E = Error
Message class:  FI - TR-FM Funds Management 
Message number: 621
Message text: Create item for unassigned expenditures
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
In the application menu for Funds Management or Cash Budget Management,
enter a commitment item for unassigned expenditures within master data
maintenance.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message FI621 ("Create item for unassigned expenditures") typically occurs in the context of financial accounting when there are expenditures that have not been properly assigned to a specific cost object, such as a cost center, internal order, or project. This can happen during the posting of invoices, expenses, or during the execution of certain financial transactions.
Cause:
Unassigned Expenditures: The primary cause of this error is that there are expenditures that have not been assigned to any cost object. This can happen if the system expects a cost assignment but none is provided.
Configuration Issues: There may be configuration settings in the SAP system that require certain fields to be filled out, and if they are not, the system will throw this error.
Missing Master Data: The relevant master data (like cost centers, internal orders, etc.) may not be set up correctly or may be missing.
Posting Rules: The posting rules in Get instant SAP help. Sign up for our Free Essentials Plan.
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