How To Fix RSODSO_GUI031 - Row &1: Datatype STRING cannot be used for key fields

RSODSO_GUI031 - Overview

• Message type: E = Error

• Message class: RSODSO_GUI - UI related messages

• Message number: 031

• Message text: Row &1: Datatype STRING cannot be used for key fields

Self-Explanatory Message

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RSODSO_GUI031 - Details

• The SAP error message RSODSO_GUI031 indicates that there is an issue with the data type of a key field in a DataStore Object (DSO) or InfoProvider. Specifically, it states that the data type STRING cannot be used for key fields. In SAP BW (Business Warehouse), key fields must have specific data types that are compatible with the underlying database and the BW data model.
  
  Cause:
  The error occurs when you attempt to define a key field in a DSO or InfoProvider with the data type STRING. In SAP BW, key fields must typically be of a fixed length and should use data types such as CHAR, NUMC, or similar, rather than STRING, which is a variable-length data type.
  
  Solution:
  To resolve this error, you need to change the data type of the key field from STRING to a compatible data type. Here are the steps to do this:
  
  
  Open the DataStore Object (DSO): Go to