How To Fix MDC_MODEL048 - Root table &1 of model &2 must have exactly 1 key field besides client

SAP Error Message - Details

• Message type: E = Error

• Message class: MDC_MODEL - Messages In Context Of MDC Model

• Message number: 048

• Message text: Root table &1 of model &2 must have exactly 1 key field besides client

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MDC_MODEL048 - Root table &1 of model &2 must have exactly 1 key field besides client ?

  The SAP error message MDC_MODEL048 indicates that there is an issue with the configuration of a model in the SAP system, specifically related to the root table of the model. The error states that the root table must have exactly one key field in addition to the client field.
  Cause:
  This error typically arises when the root table of the model is defined incorrectly. The root table must have:
  
  One key field (besides the client field) that uniquely identifies each record in the table.
  If there are no key fields or if there are multiple key fields defined, this error will be triggered.
  
  Solution:
  To resolve the MDC_MODEL048 error, you should follow these steps:
  
  
  Check the Root Table Configuration:
  
  Go to the model configuration in the SAP system.
  Identify the root table associated with the model mentioned in the error message.
  
  
  
  Verify Key Fields:
  
  Check the key fields defined for the root table.
  Ensure that there is exactly one key field in addition to the client field. If there are none or more than one, you will need to adjust the configuration.
  
  
  
  Modify Key Fields:
  
  If there are multiple key fields, you may need to remove the extra key fields or adjust the table structure to ensure that only one key field remains.
  If there are no key fields, you will need to define a suitable key field that meets the requirements.
  
  
  
  Save and Activate the Model:
  
  After making the necessary changes, save the configuration and activate the model.
  Test the model to ensure that the error no longer occurs.
  
  
  
  Consult Documentation:
  
  If you are unsure about which field to use as the key field, consult the SAP documentation or your data model design guidelines.
  
  
  
  Related Information:
  
  Client Field: In SAP, the client field is used to distinguish between different clients in a multi-client environment. It is essential for data segregation.
  Key Fields: Key fields are crucial for uniquely identifying records in a database table. In SAP, they are used for indexing and ensuring data integrity.
  Modeling Tools: Familiarize yourself with the modeling tools available in SAP, such as the SAP HANA Studio or SAP Web IDE, which can help in managing and configuring models effectively.
  
  If you continue to experience issues after following these steps, consider reaching out to your SAP support team or consulting the SAP community for further assistance.