How To Fix LTR_MODEL_APPL149 - Generic Parameter must be of table type LTR_GENERIC_VALUELIST_TAB

SAP Error Message - Details

• Message type: E = Error

• Message class: LTR_MODEL_APPL -

• Message number: 149

• Message text: Generic Parameter must be of table type LTR_GENERIC_VALUELIST_TAB

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message LTR_MODEL_APPL149 - Generic Parameter must be of table type LTR_GENERIC_VALUELIST_TAB ?

  The SAP error message LTR_MODEL_APPL149 indicates that a generic parameter being passed to a function or method is not of the expected table type LTR_GENERIC_VALUELIST_TAB. This error typically occurs in the context of SAP applications that involve data modeling or data processing, particularly when working with the SAP Landscape Transformation (SLT) or SAP Data Services.
  Cause:
  The error is caused by one of the following reasons:
  
  Incorrect Data Type: The parameter being passed is not of the expected table type. Instead, it might be a different data type (e.g., a single value, a structure, or a different table type).
  Programming Error: There may be a mistake in the ABAP code where the parameter is being defined or passed to a function module or method.
  Configuration Issue: There might be a misconfiguration in the data model or transformation settings that leads to the wrong data type being used.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Parameter Definition: Ensure that the parameter being passed is defined as LTR_GENERIC_VALUELIST_TAB. This is a table type, so you need to ensure that you are passing a table and not a single value or a different structure.
  
  
  Review ABAP Code: If you are working with custom ABAP code, review the code where the parameter is being populated and passed. Make sure that you are correctly populating a table of the expected type.
  Example:
  DATA: lt_value_list TYPE LTR_GENERIC_VALUELIST_TAB.
  " Populate lt_value_list with data
  CALL FUNCTION 'YOUR_FUNCTION_MODULE'
    EXPORTING
      your_parameter = lt_value_list.
  
  
  Check Function Module/Method Signature: If you are calling a standard SAP function module or method, check the documentation or the signature to ensure you are using the correct parameter types.
  
  
  Debugging: If the issue persists, use the ABAP debugger to step through the code and inspect the values and types of the parameters being passed. This can help identify where the mismatch occurs.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific function or module you are working with. There may be additional insights or known issues that can help you resolve the error.
  
  
  SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support for assistance, especially if this is occurring in a production environment.
  
  
  Related Information:
  
  LTR_GENERIC_VALUELIST_TAB: This is a specific table type used in SAP for generic value lists. Understanding its structure and how to populate it correctly is crucial for resolving this error.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can provide insights or solutions.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.