How To Fix RETAIL_ST_ODATA015 - Entity set can be accessed only by navigating from entity type(s) "&1"

SAP Error Message - Details

• Message type: E = Error

• Message class: RETAIL_ST_ODATA - Messages for use in Fiori Retail Store Applications

• Message number: 015

• Message text: Entity set can be accessed only by navigating from entity type(s) "&1"

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RETAIL_ST_ODATA015 - Entity set can be accessed only by navigating from entity type(s) "&1" ?

  The SAP error message RETAIL_ST_ODATA015 indicates that you are trying to access an entity set in an OData service that is not directly accessible. This error typically occurs when the entity set is designed to be accessed only through navigation from a specific entity type, rather than being accessed directly.
  Cause:
  The error is caused by attempting to access an entity set that is not intended for direct access. In OData services, certain entity sets are defined to be navigable only through relationships with other entity types. This means that you must first retrieve a related entity before you can access the desired entity set.
  Solution:
  To resolve this error, you need to follow the navigation path defined in the OData service. Here are the steps you can take:
  
  
  Identify the Entity Type: Check the error message for the entity type(s) indicated by "&1". This will tell you which entity type you need to navigate from.
  
  
  Retrieve the Parent Entity: First, make a request to retrieve the parent entity that is related to the entity set you are trying to access.
  
  
  Use Navigation Properties: Once you have the parent entity, use the navigation properties to access the desired entity set. For example, if you have a parent entity A and you want to access a child entity set B, your request should look something like this:
  /A(1)/B
  Here, 1 is the key of the parent entity.
  
  
  Check OData Metadata: If you are unsure about the relationships and navigation properties, you can check the OData service metadata (usually available at the service URL with $metadata appended) to understand the structure and relationships between entities.
  
  
  Related Information:
  
  OData Documentation: Familiarize yourself with OData concepts, especially regarding entity relationships and navigation properties. The official OData documentation can provide valuable insights.
  SAP Help Portal: Check the SAP Help Portal for specific documentation related to the OData service you are using, as it may contain examples and detailed explanations of the entity relationships.
  Debugging Tools: Use tools like Postman or SAP Gateway Client to test your OData requests and see the responses, which can help you understand how to structure your requests correctly.
  
  By following these steps, you should be able to navigate correctly and avoid the RETAIL_ST_ODATA015 error.