How To Fix WS_TOOL480 - Only numbers or character strings (in apostrophes) are permitted

SAP Error Message - Details

• Message type: E = Error

• Message class: WS_TOOL - Message Class for Web Services and Virtual Endpoints

• Message number: 480

• Message text: Only numbers or character strings (in apostrophes) are permitted

Self-Explanatory Message

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• What is the cause and solution for SAP error message WS_TOOL480 - Only numbers or character strings (in apostrophes) are permitted ?

  The SAP error message:
  WS_TOOL480: Only numbers or character strings (in apostrophes) are permitted
  
  Cause:
  This error typically occurs when you are trying to assign or compare a value in ABAP or within SAP tools (like the Web Service tool, or when working with dynamic selections, filters, or conditions) and the value format is incorrect.
  Specifically, the system expects either:
  
  A number (without quotes), or
  A character string enclosed in apostrophes (single quotes '...')
  
  If you provide a string without apostrophes or an invalid format (e.g., double quotes, no quotes for strings, or special characters), the system raises this error.
  
  Common Scenarios:
  
  When defining filter conditions in Web Service tools or selection screens.
  When dynamically building WHERE clauses or conditions in ABAP.
  When passing parameters to function modules or BAPIs that expect specific formats.
  When using transaction tools that require input in a specific format.
  
  
  Solution:
  
  Check the value format you are passing or entering.
  If the value is a string, enclose it in single quotes ('...').
  If the value is a number, enter it without quotes.
  Avoid using double quotes or other delimiters.
  Review the code or input where the value is assigned or passed and correct the format.
  
  Example:
  " Correct usage:
  lv_value = 'ABC'.    " String in apostrophes
  lv_num = 123.        " Number without quotes
  
  " Incorrect usage that causes WS_TOOL480:
  lv_value = ABC.      " String without quotes
  lv_value = "ABC".    " String in double quotes
  
  Additional Information:
  
  This error is related to syntax or input validation in SAP tools or ABAP programs.
  It helps ensure that the system can correctly interpret the data type of the input.
  If you are using a tool or interface that builds dynamic queries or filters, always verify the input format.
  In some SAP GUI screens or Web Service tools, the input fields may not automatically add apostrophes, so you must add them manually for string values.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WS_TOOL480: Only numbers or character strings (in apostrophes) are permitted
  
  
  Cause
  Input value format is incorrect (string not in apostrophes or invalid format)
  
  
  Solution
  Enclose string values in single quotes; numbers without quotes
  
  
  Where
  ABAP code, Web Service tools, dynamic filters, selection screens
  
  
  
  
  If you provide the exact context or code snippet where this error occurs, I can help you with a more precise fix.