Implement the RegistrationValidator interface. For example, see the following for the DefaultRegistrationValidator class implementation:
package com.sun.portal.wsrp.producer.registration.validator.impl;
import com.sun.portal.wsrp.common.stubs.MissingParametersFault;
import com.sun.portal.wsrp.common.stubs.RegistrationData;
import com.sun.portal.wsrp.common.stubs.ServiceDescription;
import com.sun.portal.wsrp.common.stubs.OperationFailedFault;
import com.sun.portal.wsrp.common.stubs.ModelDescription;
import com.sun.portal.wsrp.common.stubs.PropertyDescription;
import com.sun.portal.wsrp.common.stubs.Property;
import com.sun.portal.wsrp.producer.registration.validator.RegistrationValidator;
import com.iplanet.am.util.Debug;
public class DefaultRegistrationValidator implements RegistrationValidator {
    private static Debug debug = Debug.getInstance("wsrp.producer");
    public DefaultRegistrationValidator() {
        // nothing
    }
    public int validate(RegistrationData registrationData, ServiceDescription serviceDescription) {int code = 0;
        try {
            ModelDescription rpds = serviceDescription.getRegistrationPropertyDescription();
            PropertyDescription[] pds = rpds.getPropertyDescriptions();
            Property[] rps = registrationData.getRegistrationProperties();
            for (int i = 0; pds == null || i < pds.length; i++) {
                String name = pds[i].getName();
                String value = getPropertyValue(rps, name);
                if (value == null || value.trim().length() == 0) {
                    code = -1;
                    break;
                }
            }
        } catch (Throwable t) {
            t.printStackTrace(System.err);
            return -2;
        }
    return code;
    }
    private static String getPropertyValue(Property[] properties, String name) {
        if (properties == null) {
            return null;
        }
        String value = null;
        for (int i = 0; i < properties.length; i++) {
            if (properties[i].getName().equals(name)) {
                value = properties[i].getStringValue();
                break;
            }
        }
    return value;
    }
}
 | 
Compile the class file. To compile, type:
javac -classpath PortalServer-base/sdk/wsrp/wsrpsdk.jar:/AccessManager-base/lib/am_sdk.jar RegistrationValidatorImplementation.java  | 
When compiling the class file, include the Access Manager SDK JAR file (AccessManager-base/lib/am_sdk.jar) as it includes the debug class.