SAP C_CPI_15 - SAP Certified Development Associate - SAP Integration Suite

A Content Modifier is a step in an integration flow that allows you to modify the message header or body using expressions or constants. You can use a Content Modifier to delete namespaces from a message by using expressions that remove the namespace declarations or prefixes from the XML elements or attributes. For example, you can use the expression replace($body,"xmlns:ns[0-9]+=\"[^\"]+\"","") to remove all namespace declarations from the message body. An XSLT mapping is a step in an integration flow that allows you to transform the message body using an XSLT stylesheet. You can use an XSLT mapping to delete namespaces from a message by using XSLT instructions that strip or exclude the namespace information from the output XML document. For example, you can use the instruction  to exclude all namespace prefixes from the output document. References: Content Modifier | SAP Help Portal, XSLT Mapping | SAP Help Portal

Besides in SAP API Management, you can find policy templates in SAP API Business Accelerator Hub- Explore Categories ?? APIs. Policy templates are reusable sets of policies that can be applied to APIs to define their behavior and security. In SAP API Business Accelerator Hub, you can explore various categories of APIs that are pre-packaged with policy templates. For example, you can find APIs for sales order processing, customer master data management, product catalog management, and so on. Each API category has a set of policy templates that are suitable for its use case. References: SAP API Business Accelerator Hub | SAP Help Portal, Explore Categories | SAP Help Portal

To find out which entity sets are available in the OData V2.0 interface, you must retrieve the metadata document from the interface. The metadata document is an XML document that describes the data model of the OData service, including the entity types, entity sets, associations, functions, and actions. The metadata document can be accessed by appending $metadata to the service root URL of the OData service. For example, if the service root URL is https://services.odata.org/OData/OData.svc/, then the metadata document URL is https://services.odata.org/OData/OData.svc/$metadata. The metadata document can be used to discover the structure and capabilities of the OData service and to generate client code or proxies. References: Overview (OData Version 2.0) | OData - The Best Way to REST, OData API v2 Reference | SAP Help Portal

The API Management capability of the SAP Integration Suite requires API providers to incorporate APIs from source systems. An API provider is a system or application that exposes the interface and functionality of an API. The API Management capability allows you to connect to different types of API providers, such as OData, SOAP, REST, or RFC, and manage their lifecycle, security, and consumption. References: Integration Software | SAP Integration Suite, Modernize Integration with SAP Integration Suite | openSAP

OData uses HTTP, AtomPub, and JSON as its core functionalities. OData is an open protocol that allows the creation and consumption of queryable and interoperable RESTful APIs in a simple and standard way. OData builds on HTTP as the application protocol for transferring data between clients and servers. OData uses AtomPub as one of the formats for representing data feeds and entries in XML. OData also uses JSON as another format for representing data feeds and entries in a lightweight and human-readable way. References: Introducing OData - SAP Learning, OData Overview | OData - The Best Way to REST

A possible reason why the API proxy returns an HTTP status of 401 after setting up a basic authentication policy is that in the AssignMessage policy, the AssignTo tag has the type=“response”. This means that the basic authentication value is assigned to the response header instead of the request header. This will cause an authentication failure when calling the backend server or service that requires basic authentication. To fix this issue, you should change the type attribute of the AssignTo tag to type=“request”. This will ensure that the basic authentication value is assigned to the request header before sending it to the target endpoint. References: Basic Authentication | SAP Help Portal, Assign Message Policy | SAP Help Portal

A product in the API Management capability within SAP Integration Suite is a bundle of one or more API proxies that are grouped together for a specific business scenario or use case. A product is a separate artifact that can be deployed to the API business hub enterprise, which is a centralized platform for discovering, consuming, and managing APIs. A product can have its own metadata, such as name, title, description, quota limits, and so on. A product can also have its own policies that apply to all the APIs included in it. References: Create a Product | SAP Help Portal, API Business Hub Enterprise | SAP Help Portal

RAML and OpenAPI are markup languages that you can use to describe APIs. RAML stands for RESTful API Modeling Language and is based on YAML. OpenAPI is a specification for describing RESTful APIs and is based on JSON or YAML. Both languages allow you to define the structure, parameters, responses, and documentation of your APIs. References: Integration Software | SAP Integration Suite, Modernize Integration with SAP Integration Suite | openSAP