Dynamic Configuration (ASMA) in a mapping UDF (User Defined Function). Note that the getTransformationParameters() method is deprecated; but it is the only way it seems to work within an ICO (iflow). Note: You create UDF's in a function library with NWDS and not in the mapping directly.

dynamic_config_udf.java

package pi_test_purchaseorder_es;

import com.sap.aii.mapping.api.*;
import java.io.*;
import java.util.*;
import com.sap.aii.mappingtool.tf7.rt.*;
import com.sap.aii.mapping.lookup.*;
import java.lang.reflect.*;
import com.sap.ide.esr.tools.mapping.core.LibraryMethod;
import com.sap.ide.esr.tools.mapping.core.ExecutionType;
import com.sap.ide.esr.tools.mapping.core.Argument;
import com.sap.ide.esr.tools.mapping.core.Init;
import com.sap.ide.esr.tools.mapping.core.Cleanup;


public class DynamicConfigFunctions  {


	@LibraryMethod(title="setParameter", description="Set a Dynamic Configuration attribute", category="DynamicConfigFunctions", type=ExecutionType.SINGLE_VALUE)
	public String setParameter (
		@Argument(title="")  String namespace,
		@Argument(title="")  String key,
		@Argument(title="")  String value,
		 Container container)  throws StreamTransformationException{
		
		DynamicConfiguration config = (DynamicConfiguration)container.getTransformationParameters().get(StreamTransformationConstants.DYNAMIC_CONFIGURATION);
		DynamicConfigurationKey configKey = DynamicConfigurationKey.create(namespace, key);
		config.put(configKey, value);
		
		return value;
	}


	@Init(description="") 
	public void init (
		 GlobalContainer container)  throws StreamTransformationException{
		
	}

	@Cleanup 
	public void cleanup (
		 GlobalContainer container)  throws StreamTransformationException{
		
	}

	@LibraryMethod(title="getParameter", description="Get a Dynamic Configuration attribute", category="DynamicConfigFunctions", type=ExecutionType.SINGLE_VALUE) 
	public String getParameter (
		@Argument(title="")  String namespace,
		@Argument(title="")  String key,
		 Container container)  throws StreamTransformationException{

		DynamicConfiguration config = (DynamicConfiguration)container.getTransformationParameters().get(StreamTransformationConstants.DYNAMIC_CONFIGURATION);
		DynamicConfigurationKey configKey = DynamicConfigurationKey.create(namespace, key);
		return config.get(configKey);
	}
}