Message type: E = Error
Message class:  VP - Vertriebsbelegpartner 
Message number: 001
Message text: Position the cursor on a valid line
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SAP Error Message: VP001 - Position the cursor on a valid line
Cause: This error typically occurs when you try to perform an action (such as editing, deleting, or processing) on a line item or entry in a SAP transaction, but the cursor is not positioned on a valid or selectable line. In other words, the system expects you to select or highlight a specific line in a list or table, but the cursor is either on a header, empty line, or outside the valid data area. Common scenarios include: Attempting to change or delete a line item without selecting it first. Trying to execute a function that requires a line selection in tables or lists (e.g., sales order items, delivery items). Using function keys or menu options that operate on line items without having the cursor on a valid line.
Solution: Position the cursor on a valid line: Click or navigate so that the cursor is on the
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