How To Fix RS_HCPR_MODEL202 - Incompatible data types of join fields ('&1' assigned to '&2')

SAP Error Message - Details

• Message type: E = Error

• Message class: RS_HCPR_MODEL - Messages related to the HANA Composite Provider Backend

• Message number: 202

• Message text: Incompatible data types of join fields ('&1' assigned to '&2')

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RS_HCPR_MODEL202 - Incompatible data types of join fields ('&1' assigned to '&2') ?

  The SAP error message RS_HCPR_MODEL202 indicates that there is an issue with incompatible data types in a join condition within a query or data model. Specifically, it means that the fields being joined have different data types, which prevents the join from being executed successfully.
  Cause:
  The error occurs when you attempt to join two fields in a query or data model where:
  
  The data types of the fields do not match (e.g., one field is of type CHAR and the other is of type NUMC).
  The fields may have different lengths or formats that make them incompatible for a join operation.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Data Types: 
  
  Identify the fields involved in the join (the fields represented by &1 and &2 in the error message).
  Check the data types of these fields in the underlying data sources (e.g., InfoObjects, tables, or views).
  
  
  
  Data Type Conversion:
  
  If the fields have different data types, consider converting one of the fields to match the data type of the other. This can often be done using a calculated field or a transformation in the query or data model.
  For example, if one field is a character type and the other is numeric, you might convert the numeric field to a character type.
  
  
  
  Modify the Join Condition:
  
  If possible, modify the join condition to ensure that the fields being joined are compatible. This may involve changing the way the join is defined or using a different field that has a compatible data type.
  
  
  
  Check for Data Model Changes:
  
  If there have been recent changes to the data model or the underlying data sources, ensure that these changes have not introduced incompatibilities.
  
  
  
  Testing:
  
  After making the necessary adjustments, test the query or data model again to ensure that the error has been resolved.
  
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for more details on data types and joins in the context of your specific SAP module (e.g., BW, HANA).
  Data Dictionary: Use the Data Dictionary (SE11) to check the definitions of the fields involved in the join.
  Query Designer: If you are using SAP BW Query Designer, you can visually inspect the data types of the fields and make adjustments as needed.
  
  By following these steps, you should be able to resolve the RS_HCPR_MODEL202 error and successfully execute your query or data model.