BL102 - The parameter &1 has an invalid length.

SAP Error Message - Details

• Message type: E = Error

• Message class: BL - Application Log

• Message number: 102

• Message text: The parameter &1 has an invalid length.

What causes this issue?

The specified parameter has an invalid length.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Parameter may not have a value.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BL102 - The parameter &1 has an invalid length. ?

  The SAP error message BL102, which states "The parameter &1 has an invalid length," typically occurs when a parameter being passed to a function module, method, or transaction does not meet the expected length requirements defined in the system. This can happen in various contexts, such as when dealing with data input, configuration settings, or API calls.
  Cause:
  
  Parameter Length Mismatch: The parameter being passed has a length that is either too short or too long compared to what is defined in the data dictionary or the function module.
  Data Type Issues: The data type of the parameter may not match the expected type, leading to length validation failures.
  Incorrect Configuration: If the parameter is part of a configuration setting, it may have been incorrectly set up, leading to invalid lengths.
  User Input Errors: Users may input data that exceeds the allowed length, especially in custom transactions or screens.
  
  Solution:
  
  Check Parameter Definition: Review the definition of the parameter in the relevant function module or data dictionary. Ensure that the length of the input matches the expected length.
  Validate Input Data: If the error arises from user input, implement validation checks to ensure that the data entered does not exceed the defined limits.
  Adjust Configuration: If the parameter is part of a configuration, verify the settings and adjust them to meet the required length specifications.
  Debugging: If you have access to the ABAP code, use debugging tools to trace the execution and identify where the invalid length is being set or passed.
  Consult Documentation: Refer to SAP documentation or notes related to the specific function module or transaction to understand the expected parameter lengths and types.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific function module or transaction that is generating the error.
  Data Dictionary: Use transaction SE11 to look up the data element or structure associated with the parameter to understand its length constraints.
  Function Module Documentation: Use transaction SE37 to view the documentation for the function module to understand the expected input parameters and their lengths.
  User Exits or BAdIs: If the error occurs in a custom implementation, check for any user exits or BAdIs that might be modifying the parameter values.
  
  By following these steps, you should be able to identify the cause of the BL102 error and implement a suitable solution.