XSL Transform policy deployment error troubleshooting

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XSLEmptyResourceUrl

Error message

Deployment of the API proxy through either the Apigee UI or API fails with this error message:

Error Saving Revision revision_number
Error occurred while validation of bean policy_name.xml. Reason:- Non null
value expected for element ResourceURL in XSL

Example error message

In the following example error message, the name of the XSL Transform policy causing the error is xslt:

Error Saving Revision 1
Error occurred while validation of bean xslt.xml. Reason: - Non null value
expected for element ResourceURL in XSL

Example screenshot

In the Apigee UI, you will see an error similar to the following:

Non null value expected for element ResourceURL in XSL.

Cause

If the <ResourceURL> element in the XSL Transform policy is empty, then the deployment of the API proxy fails.

Diagnosis

Examine the <ResourceURL> element in the XSL Transform policy named in the error message. If there is no Resource URL specified in the <ResourceURL> element, then that is the cause of the error. For example, the following XSL Transform policy has an empty <ResourceURL> element:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<XSL async="false" continueOnError="false" enabled="true" name="xslt">
    <DisplayName>xslt</DisplayName>
    <Properties/>
    <ResourceURL></ResourceURL>
    <Parameters ignoreUnresolvedVariables="true"/>
    <OutputVariable/>
</XSL>

Because the <ResourceURL> element is empty, the deployment of the API proxy fails.

Resolution

Ensure that the <ResourceURL> element in the XSL Transform policy has a valid URL pointing to an XSLT file.

For example:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<XSL async="false" continueOnError="false" enabled="true" name="xslt">
    <DisplayName>xslt</DisplayName>
    <Properties/>
    <ResourceURL>xsl://my_transform.xsl</ResourceURL>
    <Parameters ignoreUnresolvedVariables="true"/>
    <OutputVariable/>
</XSL>

XSLInvalidResourceType

Error message

Deployment of the API proxy through either the Apigee UI or API fails with this error message:

Error Deploying Revision revision_number to env_name
XSL policy_name: Resource type must be xsl. Context Revision:revision_number;
APIProxy:api_proxy_name;Organization:org_name;Environment:env_name.

Example error message

In the following example error message, the name of the XSL Transform policy causing the error is xslt:

Error Deploying Revision 1 to test
XSL xslt: Resource type must be xsl. Context Revision:1;APIProxy:XSLTransform;
Organization:jdoe-test;Environment:test.

Example screenshot

In the Apigee UI, you will see an error similar to the following:

Resource type must be xsl.

Cause

If the resource type specified in the <ResourceURL> element of the XSL Transform policy is not of type xsl, then the deployment of the API proxy fails.

The correct format to specify this is as shown below:

<ResourceURL>xsl://<file_name>.xsl</ResourceURL>

For example, if the resource type is specified as jsc in the <ResourceURL> element of the XSL Transform policy as shown below, then the deployment of the API proxy fails:

<ResourceURL>jsc://my_transform.xsl</ResourceURL>

Diagnosis

Identify the name of the XSL Transform policy where the error has occurred. You can find this information from the error message. For example, in the following error, the policy name is xslt.
```
XSL xslt: Resource type must be xsl. Context Revision:1;APIProxy:XSLTransform;
Organization:jdoe-test;Environment:test.
```

In the failed XSL Transform policy XML, verify if the type of the resource specified in the <ResourceURL> element is not of type xsl. If it is not of xsl type, then that's the cause of the error.

For example, the following policy specifies a non xsl type in the <ResourceURL> element:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<XSL async="false" continueOnError="false" enabled="true" name="xslt">
    <DisplayName>xslt</DisplayName>
    <Properties/>
    <ResourceURL>jsc://my_transform.xsl</ResourceURL>
    <Parameters ignoreUnresolvedVariables="true"/>
    <OutputVariable/>
</XSL>

Because the resource URL is specified as jsc://my_transform.xsl, which is notof xsl type, the deployment of the API Proxy fails with the error:

XSL xslt: Resource type must be xsl. Context Revision:1;APIProxy:XSLTransform;
Organization:jdoe-test;Environment:test.

Resolution

Ensure that the resource type specified in the <ResourceURL> element of the XSL Transform policy is always of xsl type. For example:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<XSL async="false" continueOnError="false" enabled="true" name="xslt">
    <DisplayName>xslt</DisplayName>
    <Properties/>
    <ResourceURL>xsl://my_transform.xsl</ResourceURL>
    <Parameters ignoreUnresolvedVariables="true"/>
    <OutputVariable/>
</XSL>