Message type: E = Error
Message class:  FI_E - Message Class for FM English Developers 
Message number: 078
Message text: Different grace days disallowed. See long text
For each paying company code, the number of negative grace days for
each payment method needs to be the same. One or more of your paying
company codes does not have the same number of negative grace days for
every payment method that you have maintained in the negative grace
days table.
No vendor invoices can be cleared by this paying company code.
Check or correct entries in the negative grace table in this
transaction:
<DS:TRAN.OFNG>Maintain negative grace days</>
ENDIF
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_E078, which states "Different grace days disallowed," typically occurs in the context of financial transactions, particularly when dealing with payment terms or conditions that involve grace days. This error indicates that there is a mismatch in the grace days defined for different components of a transaction, such as invoices or payment terms.
Cause: Inconsistent Grace Days: The most common cause of this error is that the grace days defined in the payment terms for different line items or documents do not match. For example, if one line item has a grace period of 5 days and another has 10 days, the system will throw this error.
Configuration Issues: There may be inconsistencies in the configuration settings for payment terms in the SAP system. Document Type Settings: Different document types may have different settings for grace days, leading to conflicts when processing transactions.
Solution: Check Payment Terms: Review the payment terms assigned to
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