How To Fix WER143 - XSLT program &1 is not valid

SAP Error Message - Details

• Message type: E = Error

• Message class: WER - Messages for the package WER

• Message number: 143

• Message text: XSLT program &1 is not valid

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message WER143 - XSLT program &1 is not valid ?

  Certainly! Here's detailed information about the SAP error message WER143: "XSLT program &1 is not valid":
  
  Error Message
  WER143: XSLT program &1 is not valid
  
  &1 is a placeholder for the name of the XSLT program that is reported as invalid.
  
  
  Cause
  This error occurs when the SAP system tries to use an XSLT program (stylesheet) that is either:
  
  Not properly activated in the system.
  Contains syntax errors or is not well-formed XML.
  Missing or corrupted in the SAP repository.
  The XSLT program is incompatible with the current SAP system version or the transformation engine.
  The XSLT program is referenced incorrectly or the transport/import of the XSLT program was incomplete or faulty.
  
  
  Explanation
  SAP uses XSLT programs for XML transformations, for example in IDocs, PI/PO, or other XML processing scenarios. The XSLT program must be valid and active in the SAP system to be used successfully.
  If the XSLT program is invalid, the system cannot perform the transformation, resulting in this error.
  
  Solution
  
  
  Check the XSLT program validity:
  
  Go to transaction STRANS (Transformation Editor).
  Enter the name of the XSLT program reported in the error.
  Check if the program is active and valid.
  If inactive or invalid, try to activate it.
  If activation fails, check the syntax and correct errors.
  
  
  
  Correct syntax errors:
  
  Open the XSLT program in the editor.
  Look for XML syntax errors or invalid XSLT constructs.
  Fix any errors found.
  Save and activate the program.
  
  
  
  Re-import or re-transport the XSLT program:
  
  If the XSLT program was imported via transport or manually, re-import it to ensure completeness.
  Check for any transport errors.
  
  
  
  Check SAP Notes and patches:
  
  Sometimes, the error can be due to bugs in the SAP system or transformation engine.
  Search for relevant SAP Notes related to WER143 or XSLT issues.
  Apply any recommended patches or corrections.
  
  
  
  Verify system compatibility:
  
  Ensure the XSLT program is compatible with the SAP system version.
  If the XSLT uses features not supported by the SAP transformation engine, adjust accordingly.
  
  
  
  Check authorization:
  
  Ensure the user executing the transformation has the necessary authorizations to access and execute the XSLT program.
  
  
  
  
  Additional Information
  
  Transaction STRANS is the main tool to manage and edit XSLT programs in SAP.
  XSLT programs are stored as transformation objects in SAP.
  The error can occur in scenarios involving XML transformations such as IDoc processing, PI/PO interfaces, or Web Services.
  Always test the XSLT program after changes using the test function in STRANS.
  If you have access to the SAP system logs (SM21) or application logs (SLG1), check for more detailed error messages related to the transformation failure.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  XSLT program is invalid, inactive, contains syntax errors, or is missing/corrupted.
  
  
  Solution
  Check and activate the XSLT in STRANS, fix syntax errors, re-import if needed, apply SAP Notes.
  
  
  Tools
  STRANS (Transformation Editor), SM21, SLG1
  
  
  Related
  XML transformations, IDoc processing, SAP PI/PO, Web Services
  
  
  
  
  If you provide the exact XSLT program name or context where the error occurs, I can help you with more specific guidance.