Message type: E = Error
Message class:  FI_E - Message Class for FM English Developers 
Message number: 168
Message text: No PO statistics are available for PO &1 and line item &2
You have activated the budgetary ledger (BL) integrated with the Funds
Management system. You are trying to post either a goods receipt (GR)
or invoice receipt (IR) for purchase order (PO) number &V1&, PO line
item &V2&. This posting would require a posting into the budgetary
ledger; however, the application could not carry out the posting
because it could not find statistical data for this PO line item.
Statistical data is the data about the history of a PO line item, such
as PO, GR, and IR amounts and quantities and other information.
The application needs this line item data for the current posting in
order to perform the necessary calculations to post to the BL.
This is an internal program error, which should be reported to SAP
immediately.
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_E168 "No PO statistics are available for PO &1 and line item &2" typically occurs in the context of financial accounting and purchasing when there is an attempt to access or process purchase order (PO) statistics that do not exist for a specific PO or line item. Here’s a breakdown of the cause, potential solutions, and related information:
Cause: Missing PO Statistics: The primary reason for this error is that the system does not have any statistical data for the specified purchase order and line item. This can happen if: The PO has not been fully processed (e.g., no goods receipt or invoice receipt has been posted). The PO is new and has not yet been used in any transactions. The PO was deleted or archived, leading to the loss of associated statistics. Incorrect PO or Line Item: The error may also arise if the PO number or line item number provided
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