How To Fix CL_SADL_GW_MDE_MSGX056 - & contains no valid descendants

SAP Error Message - Details

• Message type: E = Error

• Message class: CL_SADL_GW_MDE_MSGX - texts for parser

• Message number: 056

• Message text: & contains no valid descendants

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CL_SADL_GW_MDE_MSGX056 - & contains no valid descendants ?

  The SAP error message CL_SADL_GW_MDE_MSGX056 typically indicates that a query or operation in the SAP system is attempting to access or retrieve data, but it has encountered a situation where there are no valid descendants or related data entries available. This error is often associated with the SAP Gateway and the SADL (Service Adaptation Definition Language) framework, which is used for building OData services.
  Cause:
  
  Data Model Issues: The underlying data model may not have any valid entries or relationships defined. This could be due to missing data or incorrect configurations.
  Filter Conditions: The query might be applying filters that result in no data being returned. This can happen if the filters are too restrictive or if the data does not meet the criteria.
  Authorization Issues: The user executing the query may not have the necessary authorizations to view the data, leading to the appearance of no valid descendants.
  Service Configuration: There may be issues with the OData service configuration, such as incorrect entity relationships or navigation properties.
  
  Solution:
  
  Check Data Availability: Verify that the data you are trying to access actually exists in the database. You can do this by running a direct query on the relevant tables.
  Review Filters: Examine the filters applied in the query. Ensure that they are correctly set and not overly restrictive.
  Authorization Check: Ensure that the user has the necessary authorizations to access the data. You can check this in the user roles and authorizations.
  Service Configuration: Review the OData service configuration in the SAP Gateway. Ensure that the entity sets and navigation properties are correctly defined and that they reflect the underlying data model.
  Debugging: If you have access, use the debugging tools in SAP to trace the execution of the query and identify where it fails to find valid descendants.
  Consult Documentation: Refer to SAP documentation or notes related to the specific version of the system you are using, as there may be known issues or patches available.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to this error message. You can search for the error code or related keywords in the SAP Support Portal.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  SAP Help Portal: Utilize the SAP Help Portal for detailed documentation on SADL and OData services, which may provide insights into best practices and troubleshooting steps.
  
  If the issue persists after trying the above solutions, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.