How To Fix RSAU508 - Arithmetical errors or conversion errors found in the start routine

SAP Error Message - Details

• Message type: E = Error

• Message class: RSAU - Update rules

• Message number: 508

• Message text: Arithmetical errors or conversion errors found in the start routine

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 RSAU508 - Arithmetical errors or conversion errors found in the start routine ?

  The SAP error message RSAU508 indicates that there are arithmetical or conversion errors occurring in the start routine of a data transfer process, typically in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence). This error can arise during the extraction, transformation, and loading (ETL) processes when data is being processed in a DataSource or InfoPackage.
  Causes of RSAU508 Error
  
  
  Data Type Mismatch: The data being processed may not match the expected data types defined in the InfoObject or DataSource. For example, trying to perform arithmetic operations on character fields or incompatible numeric formats.
  
  
  Null or Invalid Values: The presence of null values or invalid data (e.g., division by zero, negative values where only positive values are expected) can lead to arithmetic errors.
  
  
  Overflow Errors: If the result of an arithmetic operation exceeds the maximum limit of the data type being used (e.g., trying to store a large number in a field defined as an integer).
  
  
  Incorrect Logic in Start Routine: Errors in the ABAP code within the start routine can lead to unexpected results or exceptions being raised.
  
  
  Data Quality Issues: Poor data quality in the source system can lead to unexpected values that cause errors during processing.
  
  
  Solutions to RSAU508 Error
  
  
  Review the Start Routine Code: Check the ABAP code in the start routine for any logical errors or incorrect assumptions about the data. Ensure that all arithmetic operations are valid and that data types are correctly handled.
  
  
  Data Type Validation: Ensure that the data types in the source system match those expected in the target InfoObject. Use appropriate conversion functions if necessary.
  
  
  Handle Null and Invalid Values: Implement checks in the start routine to handle null or invalid values gracefully. For example, use conditional statements to skip processing for invalid records or set default values.
  
  
  Debugging: Use the debugger to step through the start routine and identify the exact point where the error occurs. This can help pinpoint the problematic data or logic.
  
  
  Data Cleansing: Perform data cleansing in the source system to ensure that the data being extracted is valid and conforms to the expected formats.
  
  
  Testing: Test the data load with a smaller dataset to isolate the issue. This can help identify specific records that may be causing the error.
  
  
  Related Information
  
  Transaction Codes: You can use transaction codes like RSA1 (Data Warehousing Workbench) to monitor and manage data loads and transformations.
  Error Logs: Check the error logs in the Data Warehousing Workbench for more detailed information about the error and the specific records that caused it.
  SAP Notes: Look for relevant SAP Notes that may address known issues related to RSAU508 or provide additional guidance on handling similar errors.
  Documentation: Refer to SAP documentation for best practices in data modeling and ETL processes to avoid common pitfalls that lead to such errors.
  
  By following these steps, you should be able to identify and resolve the RSAU508 error effectively.