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Message type: E = Error
Message class: WL - Workflow: run-time messages
Message number: 129
Message text: Table action not possible on single-line element &
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WL129
- Table action not possible on single-line element & ?The SAP error message WL129, which states "Table action not possible on single-line element &", typically occurs in the context of SAP workflows or when dealing with table structures in SAP applications. This error indicates that an operation you are trying to perform on a table element is not valid because the element in question is a single-line element rather than a multi-line table.
Cause:
- Single-Line Element: The error arises when you attempt to perform a table action (like adding, deleting, or modifying rows) on a single-line element. Single-line elements are not designed to hold multiple entries, which is why the action is not permitted.
- Incorrect Data Structure: The data structure you are working with may not be set up correctly. For example, you might be trying to treat a field that is defined as a single value as if it were a table.
- Workflow Configuration: If this error occurs in a workflow context, it may be due to incorrect configuration of the workflow steps or the data being passed between steps.
Solution:
- Check Data Structure: Review the data structure you are working with. Ensure that you are using a table structure (like an internal table) when you need to perform table actions. If you need to store multiple entries, you should define a table type instead of a single-line type.
- Modify Workflow Steps: If the error is occurring in a workflow, check the configuration of the workflow steps. Ensure that the data being passed is appropriate for the actions being performed.
- Use Correct Methods: If you are using ABAP code, ensure that you are using the correct methods for handling single-line and multi-line data. For example, use
APPEND
for adding entries to an internal table and ensure you are not trying to apply table operations on a single-line variable.- Debugging: If you are unsure where the error is coming from, use debugging tools in SAP to trace the execution and identify where the incorrect operation is being attempted.
Related Information:
If the problem persists after checking these areas, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
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