How To Fix WXP351 - State the source key figure for "Values from previous period"

SAP Error Message - Details

• Message type: E = Error

• Message class: WXP - Retail Planning

• Message number: 351

• Message text: State the source key figure for "Values from previous period"

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• What is the cause and solution for SAP error message WXP351 - State the source key figure for "Values from previous period" ?

  Certainly! Here's a detailed explanation for the SAP error message WXP351:
  
  SAP Error Message: WXP351
  Text: State the source key figure for "Values from previous period"
  
  Cause:
  This message appears in SAP BW (Business Warehouse) when you are trying to use the "Values from previous period" function in a query or a key figure definition, but the system does not know which source key figure it should use to calculate or fetch the values from the previous period.
  In other words, the system requires you to explicitly specify the source key figure that contains the data for the current period, so it can then calculate or retrieve the corresponding values from the previous period.
  
  When does it occur?
  
  When defining a calculated key figure in a BEx Query Designer.
  When using time-dependent calculations such as "Values from previous period" or similar time-shifted calculations.
  When the source key figure is not specified or incorrectly specified in the formula or key figure properties.
  
  
  Solution:
  To resolve the WXP351 error, you need to:
  
  
  Specify the Source Key Figure:
  
  In the BEx Query Designer, when creating or editing a calculated key figure that uses "Values from previous period," you must explicitly select the source key figure that contains the current period values.
  This is usually done in the formula editor or in the properties of the calculated key figure.
  
  
  
  Check the Formula:
  
  Ensure that the formula for the calculated key figure correctly references the source key figure.
  For example, if you want to show sales from the previous period, the source key figure should be the "Sales" key figure.
  
  
  
  Verify Time Characteristics:
  
  Make sure the time characteristic (e.g., 0CALMONTH, 0FISCPER) is correctly used and consistent with the source key figure.
  
  
  
  Recreate the Calculated Key Figure if Needed:
  
  Sometimes, deleting and recreating the calculated key figure with the correct source key figure resolves the issue.
  
  
  
  
  Additional Information:
  
  "Values from previous period" is a common time-shift function in SAP BW queries to compare current period data with previous periods.
  The source key figure is essential because the system needs a baseline measure to shift in time.
  This error is a warning (WXP prefix) indicating missing input rather than a system failure.
  Properly defining time-dependent calculations improves report accuracy and user understanding.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error Code
  WXP351
  
  
  Message
  State the source key figure for "Values from previous period"
  
  
  Cause
  Source key figure for time-shift calculation not specified
  
  
  Solution
  Specify the source key figure in the calculated key figure properties or formula editor
  
  
  Context
  Occurs in BEx Query Designer when using time-shift functions
  
  
  
  
  If you need help with the exact steps in BEx Query Designer or formula syntax, please let me know!