SAP APIM policy templates.

-

 https://api.sap.com/package/SecurityBestPractices/policytemplate


https://api.sap.com/package/SecurityBestPractices/policytemplate


https://github.com/SAP/apibusinesshub-api-recipes/blob/master/api-recipes-by-type.md

https://github.com/SAP/apibusinesshub-api-recipes/tree/master/authentication/basicauthentication

----------------


Here’s a use case to transform an XML response format using the <XSL> policy in SAP BTP APIM. Suppose you have an API that returns a response in XML format but you need to transform it into another XML structure for downstream systems. This is where an XSLT transformation can be applied using the <XSL> policy.

Use Case: Transforming Product Data XML

Objective: Transform the XML response containing product details from the format provided by the source system to a new format required by the target system.

Scenario

  • Input XML (from the source system):

    xml
    <ProductDetails>
    <Product>
        <ProductID>12345</ProductID>
        <ProductName>Wireless Mouse</ProductName>
        <Price>25.99</Price>
        <Availability>In Stock</Availability>
    </Product>
</ProductDetails>

  • Target XML (required by the target system):

    xml
    <Item>
    <ID>12345</ID>
    <Name>Wireless Mouse</Name>
    <Cost>25.99</Cost>
    <Status>In Stock</Status>
</Item>

XSL Policy Implementation

  1. Define the <XSL> Policy in the API proxy to transform the response XML.

    xml
    <XSL async="true" continueOnError="false" enabled="true" xmlns="http://www.sap.com/apimgmt">
    <!-- Output variable to store transformed XML -->
    <OutputVariable>transformedResponse</OutputVariable>
    <!-- Reference to the XSLT file for transformation -->
    <ResourceURL>xsl://ProductDataTransform.xsl</ResourceURL>
    <!-- Source message for transformation -->
    <Source>response</Source>
</XSL>

  2. XSLT Transformation (ProductDataTransform.xsl): This XSLT file will map elements from the source XML to the required target XML structure.

    xml
    <?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output method="xml" indent="yes"/>
    
    <!-- Root element template match for ProductDetails -->
    <xsl:template match="/ProductDetails/Product">
        <Item>
            <!-- Mapping source elements to target elements -->
            <ID><xsl:value-of select="ProductID"/></ID>
            <Name><xsl:value-of select="ProductName"/></Name>
            <Cost><xsl:value-of select="Price"/></Cost>
            <Status><xsl:value-of select="Availability"/></Status>
        </Item>
    </xsl:template>
</xsl:stylesheet>

Explanation of XSL Policy and XSLT Transformation

  • OutputVariable: The transformed XML output is stored in the variable transformedResponse, which you can later use for further processing or to send as the API response.

  • ResourceURL: The xsl://ProductDataTransform.xsl refers to the XSLT file uploaded in the API Management platform that performs the transformation.

  • Source: This is set to response, which is the original XML response from the backend that you wish to transform.

Expected Output

After applying this transformation, the transformedResponse variable will contain the following XML structure:

xml
<Item>
    <ID>12345</ID>
    <Name>Wireless Mouse</Name>
    <Cost>25.99</Cost>
    <Status>In Stock</Status>
</Item>

This output can then be sent as the API response or used in further policies as needed.

Using this approach, the <XSL> policy in SAP BTP APIM enables flexible XML transformations to meet the specific needs of different client systems or backend services.

--------------------

How to debug api 

https://community.sap.com/t5/technology-blogs-by-members/demystifying-use-of-custom-script-in-sap-cloud-platform-api-management/ba-p/13377656


json schema validation

https://community.sap.com/t5/technology-blogs-by-members/validate-json-message-in-api-management/ba-p/13523122


hands on required 

https://sapzero2hero.com/2023/01/03/sap-cpi-working-with-policy-in-sap-api-management-part-01/

https://signatov.com/handling-exceptions-when-triggering-the-sap-btp-api/  very importtant.

https://saurabhtree.com/2024/03/03/sap-api-management-part-4-managing-apis/comment-page-1/

Popular posts from this blog

praveen samples: idoc2edi: step by tpm configuration, with payloads

-
Image
  --------------------------- sample payload UNB+UNOY:3+3015886900013+3020810000707+251008:1055+587++++++1'UNH+408+ORDRSP:D:96A:UN:EAN005'BGM+231+0004292586+29'DTM+137:20250124:102'DTM+17:20250124:102'RFF+ON:4110883262'DTM+171:20250124:102'NAD+SU+3015886900013::9'NAD+BY+3020815000252::9'NAD+IV+3020819948536::9'NAD+DP+3020815000252::9'CUX+2:EUR:4'LIN+000010+5+3700242600613:EN'PIA+1+FM710327902:SA'IMD+F++FM710327902::9:FM710 MOUSSE PU 2C AERO 400ML CART 'QTY+21:10.000'QTY+12:10.000'DTM+17:20250318:102'MOA+203:71.40'PRI+AAA:7.14'RFF+ON:4110883262:000010'LIN+000020+5+3700242610537:EN'PIA+1+FF197341330:SA'IMD+F++FF197341330::9:FF197 COUPE FEU 2EN1 AERO 750ML CAR'QTY+21:5.000'QTY+12:5.000'DTM+17:20250318:102'MOA+203:49.90'PRI+AAA:9.98'RFF+ON:4110883262:000020'LIN+000030+5+3700242610476:EN'PIA+1+FM611341327:SA'IMD+F++FM611341327::9:FM611 VERT 2EN1 AERO 750ML CART DE ...
Read more

50 questoins of grok questions.

-
50 Question Templates to Get Better, Faster Answers from Grok (or Any AI) 1–10: FACT / DEFINITION # How to Ask Example Grok Answer 1 "Define [X] in 1 sentence." Define photosynthesis in 1 sentence. Plants use sunlight to turn CO₂ and water into sugar and oxygen. 2 "What is [X]?" What is DNA? DNA is the molecule that carries genetic instructions in all living things. 3 "[X] = ?" ATP = ? ATP = Adenosine Triphosphate, the energy currency of cells. 4 "List 3 examples of [X]." List 3 examples of proteins. Hemoglobin, insulin, collagen. 5 "True or False: [X]" True or False: All enzymes are proteins. False. Some are RNA (ribozymes). 6 "[X] vs [Y]: 1-line difference." Mitosis vs Meiosis: 1-line difference. Mitosis makes 2 identical cells; meiosis makes 4 gametes. 7 "Who discovered [X]?" Who discovered penicillin? Alexander Fleming in 1928. 8 "When was [X] invented?" When was PCR invented? 1983 by Kary Mullis. 9 ...
Read more

SAP CPI : camle expression in sap cpi , cm, router, filter and groovy script. format

-
Image
  --------------------- Using Camel Simple Expression Language Cloud Integration  supports a subset of the expressions defined in Camel Simple Expression Language (see  https://camel.apache.org/components/next/languages/simple-language.html  ). You can use Camel Simple Expression Language when configuring the following components: Components that Support Camel Simple Expression Language Component Use Camel Simple Expression to ... More Information Content modifier Define: Message body Message header Exchange property ( Type  parameter set to  Expression ) Define Content Modifier Write variables Define a variable. ( Type  parameter set to  Expression ) Define Write Variables Router Define a routing condition. ( Expression Type  parameter set to  Non-XML ) Define Router Content filter Define conditions for XPath elements. To review some examples, see  Examples . Define Filter Expressions Supported by Content Modifier and Write Variabl...
Read more