How To Fix /ISIDEX/EDEREG_INV021 - No appropriate lines available to check in incoming bill

/ISIDEX/EDEREG_INV021 - Overview

• Message type: E = Error

• Message class: /ISIDEX/EDEREG_INV -

• Message number: 021

• Message text: No appropriate lines available to check in incoming bill

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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/ISIDEX/EDEREG_INV021 - Details

• The SAP error message /ISIDEX/EDEREG_INV021 indicates that there are no appropriate lines available to check in the incoming bill. This error typically occurs in the context of invoice verification or processing within the SAP system, particularly when dealing with incoming invoices in the IS-IS (Industry Solution for Utilities) module.
  
  Cause:
  
  Missing or Incorrect Data: The incoming invoice may not have the necessary line items or data that the system expects. This could be due to incorrect invoice formatting or missing information.
  Invoice Not Matched: The invoice may not match any purchase order or service entry sheet that is expected to be associated with it.
  Document Status: The document might be in a status that does not allow for processing, such as being blocked or already processed.
  
  Configuration Issues: There may be configuration settings in the SAP system that are not aligned with the expected processing of incoming invoices.
  
  
  Solution:
  
  Check Invoice Data: Review the incoming invoice for