Message type: E = Error
Message class:  EK - IS-U Accounts Receivable and Payable 
Message number: 499
Message text: Only &1 or &2 can be used as a statistics indicator for this transaction
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The SAP error message EK499 indicates that there is an issue with the statistics indicator being used in a transaction. This error typically arises in the context of purchasing documents, such as purchase orders or purchase requisitions, where specific statistics indicators are expected.
Cause: The error message "EK499 Only &1 or &2 can be used as a statistics indicator for this transaction" usually occurs due to one of the following reasons: Invalid Statistics Indicator: The statistics indicator being used in the transaction is not valid for the type of document or transaction you are processing. SAP has predefined statistics indicators that are allowed for specific transaction types.
Configuration Issues: There may be configuration settings in the SAP system that restrict the use of certain statistics indicators for specific transactions. Data Entry Error: The user may have mistakenly entered an incorrect statistics indicator in the transaction.
Solution: To resolve the EK499 error, you can take the following steps: Check
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