How To Fix NI100 - Invalid call of PO change via function modules

SAP Error Message - Details

• Message type: E = Error

• Message class: NI - Document index processing

• Message number: 100

• Message text: Invalid call of PO change via function modules

What causes this issue?

The function modules for the fully automatic changing of purchase
orders have been invoked in the wrong sequence. The correct sequence
is:

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

ME_PURCHASE_DOCU_DATA_REFRESH
ME_PURCHASE_DOCUMENT_DATA_READ
ME_PUR_DOCU_HEADER_CHANGE
ME_PUR_DOCU_POSITION_CHANGE
ME_PURCHASE_DOCU_DATA_CHECK
ME_PURCHASE_DOCUMENT_DATA_SAVE
Data inconsistencies may be caused if this sequence is not adhered to.

System Response

How to fix this error?

Please bring the function module calls into line with the sequence
shown above.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message NI100 - Invalid call of PO change via function modules ?

  The SAP error message NI100 "Invalid call of PO change via function modules" typically occurs when there is an attempt to change a Purchase Order (PO) using function modules in a way that is not allowed or is incorrectly implemented. This error can arise in various scenarios, such as during custom development, data migration, or integration processes.
  Causes:
  
  Incorrect Function Module Usage: The function module being called may not be appropriate for the operation being performed. For example, using a function module designed for creating a PO instead of one for changing it.
  Missing or Incorrect Parameters: The parameters passed to the function module may be incomplete or incorrect, leading to the system being unable to process the request.
  Authorization Issues: The user executing the function may not have the necessary authorizations to change the PO.
  PO Status: The Purchase Order may be in a status that does not allow changes (e.g., if it has been fully delivered or invoiced).
  Custom Code Issues: If there is custom code involved, it may not be handling the PO change correctly.
  
  Solutions:
  
  Check Function Module: Ensure that the correct function module is being used for changing a Purchase Order. Common function modules for changing POs include BAPI_PO_CHANGE or BAPI_PO_GETDETAIL.
  Validate Parameters: Review the parameters being passed to the function module. Ensure that all required fields are populated correctly and that the data types match the expected input.
  Review User Authorizations: Check the user’s authorizations to ensure they have the necessary permissions to change Purchase Orders.
  Check PO Status: Verify the status of the Purchase Order. If it is in a status that does not allow changes, you may need to take appropriate actions to change its status or create a new PO.
  Debug Custom Code: If the error occurs in custom code, use debugging tools to trace the execution and identify where the error is occurring. Ensure that the logic for calling the function module is correct.
  Consult SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on best practices for changing Purchase Orders.
  
  Related Information:
  
  SAP Documentation: Review the official SAP documentation for the function modules you are using to understand their expected behavior and requirements.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they found.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ME22N (Change Purchase Order) to understand the standard process for changing POs in SAP.
  
  If the issue persists after trying the above solutions, it may be beneficial to involve your SAP Basis or ABAP team for further investigation.