How To Fix WPLG031 - Query field name 'MATNR' in the OLTP(R/3) System must be in method &

SAP Error Message - Details

• Message type: E = Error

• Message class: WPLG - Interfaces for Space Management

• Message number: 031

• Message text: Query field name 'MATNR' in the OLTP(R/3) System must be in method &

How to fix this error?

Execute <DS:SIMG.BW_RT_AA_METH>Maintenance of Methods for Analytical
Applications</>.

Error message extract from SAP system. Copyright SAP SE.

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• What is the cause and solution for SAP error message WPLG031 - Query field name 'MATNR' in the OLTP(R/3) System must be in method & ?

  SAP Error Message:
  WPLG031: Query field name 'MATNR' in the OLTP(R/3) System must be in method &?
  
  Cause:
  This error typically occurs in SAP BW (Business Warehouse) or SAP BW/4HANA when a query or transformation tries to access a field (in this case, MATNR - Material Number) from the OLTP (R/3) system, but the field is not properly defined or accessible in the expected method or context.
  More specifically:  
  
  The field MATNR is expected to be retrieved via a certain method (e.g., a function module, BAPI, or a specific extraction method) but is missing or not included in that method.  
  This can happen if the data source or extractor is not correctly configured to include the field MATNR.  
  It may also occur if the query or transformation is referencing a field that is not part of the extraction structure or the method used to pull data from the OLTP system.
  
  
  Solution:
  
  
  Check the DataSource / Extraction Method:
  
  Verify that the DataSource used for extraction from the OLTP system includes the field MATNR.  
  In transaction RSA6 or RSA3, check the DataSource structure and ensure MATNR is part of the extraction fields.
  
  
  
  Check the Extraction Method / Function Module:
  
  If a custom extractor or function module is used, ensure that the method includes MATNR in the extraction logic.  
  If the method is a standard SAP extractor, verify that it is correctly activated and includes the field.
  
  
  
  Check Query or Transformation:
  
  In BW Query Designer or transformation rules, ensure that the field MATNR is correctly mapped and available.  
  If the field is missing, add it or adjust the query/transformation to use available fields.
  
  
  
  Re-activate or Re-generate the DataSource:
  
  Sometimes re-activating the DataSource or regenerating the extraction structures can resolve inconsistencies.
  
  
  
  Check for OSS Notes:
  
  Search SAP OSS Notes for any known issues related to this error message and your SAP version.
  
  
  
  
  Related Information:
  
  MATNR is the standard SAP field for Material Number, a key master data field in logistics.  
  OLTP (Online Transaction Processing) system refers to the SAP ECC or S/4HANA system from which data is extracted.  
  The error message indicates a mismatch or missing configuration in the extraction method or query referencing the OLTP system.  
  This error is common during BW data extraction or query execution when the metadata or extraction logic is inconsistent.
  
  
  Summary:
  
  Cause: Field MATNR is not included in the extraction method or DataSource from the OLTP system.  
  Solution: Verify and correct the DataSource, extraction method, and query/transformation to ensure MATNR is included and accessible. Re-activate or regenerate extraction objects if necessary.
  
  
  If you provide more context (e.g., which transaction or process triggers this error), I can give more specific guidance.