Message type: E = Error
Message class:  FI_E - Message Class for FM English Developers 
Message number: 301
Message text: Enter &1 as a source field or define a condition for &2
If you use SETs as source fields and if the sets are dependent on a
subclass (example: the controlling area is a subclass for cost center
groups), you must also enter the subclass as a source field.
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 FI_E301 ("Enter &1 as a source field or define a condition for &2") typically occurs in the context of financial accounting, particularly when working with the configuration of financial statements, reports, or data entry forms. This error indicates that the system expects a specific source field to be defined or a condition to be set for a particular field in the context of financial data processing.
Cause:
Missing Source Field: The error often arises when a required source field is not specified in the configuration or data entry. This could be due to incomplete setup in the financial reporting or accounting configuration.
Incorrect Configuration: The configuration for the financial statement or report may not have been set up correctly, leading to the system not recognizing the necessary fields.
Data Entry Issues: If a user is trying to enter data into a form or report without providing all the necessary fields, Get instant SAP help. Sign up for our Free Essentials Plan.
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