Message type: E = Error
Message class:  9J1UF_UATAX - Ukrainian tax messages 
Message number: 239
Message text: Fill both values for correct period condition
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The SAP error message 9J1UF_UATAX239 with the description "Fill both values for correct period condition" typically indicates that there is an issue with the configuration or input data related to tax conditions in the system. This error often arises when the system expects both a start and end date (or period) to be filled in for a tax condition, but one or both of these values are missing.
Cause: Missing Values: The most common cause is that either the start date or end date for a tax condition is not filled in. Incorrect Configuration: There may be an issue with how the tax conditions are configured in the system. Data Entry Error: During data entry, the user may have overlooked filling in the required fields.
Solution: Check Input Fields: Go to the transaction or screen where the error occurred and ensure that both the start date and end date fields for the tax condition are filled
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