Message type: E = Error
Message class:  FI - TR-FM Funds Management 
Message number: 863
Message text: Set up the cumulative data before starting the report
To set up the actual/commitment totals records, the system needs so
many resources that this is no longer possible using an online report.
If you have chosen the "Values including subordinate funds centers"
select option, you must therefore accumulate the commitment/actual data
from the subordinate funds centers and commitment items before starting
the report.
Report not carried out.
Start program <ZH>RFMSUV00</> to set up the cumulative data and then
the report.  To obtain the most up-to-date data for your evaluations,
you should start the program just before starting the report.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message FI863 ("Set up the cumulative data before starting the report") typically occurs in the context of financial reporting, particularly when dealing with cumulative data in the Financial Accounting (FI) module. This error indicates that the system requires certain cumulative data to be set up before you can run a specific report.
Cause:
The error usually arises due to one of the following reasons:
Cumulative Data Not Initialized: The cumulative data for the relevant financial year or period has not been initialized or set up in the system.
Missing Configuration: There may be missing configuration settings in the financial reporting module that prevent the report from accessing the necessary cumulative data.
Incorrect Report Parameters: The parameters or selection criteria used to run the report may not align with the available cumulative data.
Solution:
To resolve the FI863 error, you can take the following steps:
Initialize Cumulative Data:
Go to the relevant transaction for initializing cumulative data. Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
FI862 The data was last summarized on &
What causes this issue?  If you accessed the report with different funds, the cumulative data may be different.System Response  The system issues an e...
FI859 Enter fiscal year and period
What causes this issue?  The fields From-fiscal year, From-period, To fiscal year and To period are not filled in correctly.System Response How to fix...
FI870 Criteria category &1 does not exist
What causes this issue?  You tried to maintain a commitment item using criteria. No criterion category is assigned to this commitment item.How to fix ...
FI871 Length of criteria belonging to criteria category &1 must be &2
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.