How To Fix SRT_WSP037 - Type '&1' of XML string is not type of DT variant

SAP Error Message - Details

• Message type: E = Error

• Message class: SRT_WSP - Messages for SRT WSP

• Message number: 037

• Message text: Type '&1' of XML string is not type of DT variant

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SRT_WSP037 - Type '&1' of XML string is not type of DT variant ?

  The SAP error message SRT_WSP037 indicates that there is a mismatch in the expected data type of an XML string being processed in a web service scenario. Specifically, it suggests that the type of the XML string does not match the expected data type, which is a DT (Data Type) variant.
  Cause:
  
  Data Type Mismatch: The XML string being sent or received does not conform to the expected data type defined in the web service interface. This can happen if the XML structure or the data types of the elements do not match what is defined in the WSDL (Web Services Description Language).
  Incorrect Mapping: If there is a mapping issue between the XML data and the expected data types in the SAP system, this error can occur.
  Invalid XML Structure: The XML might be malformed or not structured correctly, leading to parsing issues.
  Versioning Issues: If there are changes in the web service interface (like changes in the WSDL) and the consuming application is not updated accordingly, it can lead to this error.
  
  Solution:
  
  Check XML Structure: Validate the XML being sent or received to ensure it adheres to the expected structure and data types. You can use XML validation tools to check for well-formedness and schema compliance.
  Review WSDL: Compare the XML data against the WSDL definition to ensure that the data types and structures match what is expected.
  Update Mappings: If there are changes in the data types or structures, update the mappings in the SAP system accordingly.
  Debugging: Use transaction codes like SRT_UTIL or SRT_MONI in SAP to monitor and debug the web service calls. This can help identify where the mismatch is occurring.
  Check for Updates: Ensure that both the SAP system and the consuming application are using the same version of the web service interface. If there have been updates, make sure all systems are synchronized.
  Error Handling: Implement error handling in your web service calls to catch and log errors for further analysis.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to SRT (SAP Web Services Runtime) for any known issues or patches that might address this error.
  Documentation: Review SAP documentation on web services and data types to understand how to properly define and use them.
  Community Forums: Engage with SAP community forums or support channels for additional insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.