Message type: E = Error
Message class:  67_LOAN - Messages for Fin. Asset Management for Loans - Continued 
Message number: 088
Message text: Incorrect activity category &1 - Only debit/credit position for IP
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The SAP error message 67_LOAN088 indicates that there is an issue with the activity category specified in a loan-related transaction. Specifically, the message states that the activity category is incorrect and that only debit or credit positions are allowed for Investment Programs (IP).
Cause: The error typically arises due to one of the following reasons: Incorrect Activity Category: The activity category specified in the transaction does not match the expected categories for the Investment Program. This could be due to a typo or an incorrect selection in the transaction.
Configuration Issues: The system may not be configured correctly to allow the specified activity category for the type of transaction being processed. Transaction Type Mismatch: The transaction type being used may not support the activity category that has been selected.
Solution: To resolve the error, you can take the following steps: Check Activity Category: Verify the activity category you are trying to use. Ensure that it is a valid category
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