Message type: E = Error
Message class:  XS - SAPconnect: All messages 
Message number: 031
Message text: No conversion known for & to &
An object in a document to be sent is in "&V1&" format. It is to be
converted to "&V2&" format for sending. No conversion function is
known.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Action was terminated.
Make a function module available that performs the required conversion
from "&V1&" to "&V2&". Declare it in the configuration of SAPconnect
(table SXCONVERT2, possibly table SXDEVTYPE).
Error message extract from SAP system. Copyright SAP SE.
The SAP error message XS031, which states "No conversion known for & to &," typically occurs in the context of data type conversion issues within SAP systems, particularly in ABAP programs or when working with SAP HANA.
Cause: This error usually arises when there is an attempt to convert data from one type to another, and the system does not recognize how to perform that conversion. Common scenarios include: Trying to convert incompatible data types (e.g., converting a string to a numeric type when the string does not represent a valid number). Using custom data types or structures that do not have a defined conversion path. Mismatched data types in function module parameters or method calls.
Solution: To resolve the XS031 error, consider the following steps: Check Data Types: Review the data types involved in the conversion. Ensure that they are compatible and that the source data can be converted to the target type. Use Explicit Conversion: If you
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