How To Fix SALV_X_API031 - Quantity field does not have a numeric type

SALV_X_API031 - Overview

• Message type: E = Error

• Message class: SALV_X_API - Messages for ALV API exceptions

• Message number: 031

• Message text: Quantity field does not have a numeric type

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SALV_X_API031 - Quantity field does not have a numeric type ?

  The SAP error message SALV_X_API031 indicates that there is an issue with a quantity field in your ALV (ABAP List Viewer) report. Specifically, it means that the field you are trying to use as a quantity does not have a numeric data type. This can occur when you are trying to display or manipulate data in an ALV grid and the field expected to hold numeric values is defined with a non-numeric data type (e.g., character or string).
  Cause
  
  Data Type Mismatch: The field in question is defined with a non-numeric data type in the underlying data structure or table.
  Field Mapping: When creating the ALV report, the field mapping may not have been set correctly, leading to the ALV expecting a numeric type but receiving a different type.
  Data Source Issues: The data source (like a database table or internal table) may have been incorrectly defined or populated, leading to the wrong data