WKLPI Excpetion while calling a public workflow

Question

Hi,
I am getting an error as follows
Cannot identify a unique CA based on selection criterias.
Exception while creating a subworkflow instance object.....
I get this error while invoking a public workflow from a task.
Has anyone encountered a similiar case....aor does anyine know how to rectify
this error
Regards
Raj

Answer 1

Seems like after calling a java method from a native code using JNIEnv*, it is not reusable. How can i achieve my goal ?By keeping instead another structure as a class variable: JavaVM*.
With that variable you can retrieve JNIEnv* in each C++ method you need it.
Suppose you want to use JNIEnv* in SomeCppClass::someCppMethod() method:class SomeCppClass {
private:
    JavaVM * jvm;
public:
    SomeCppClass();
    ~SomeCppClass();
    void someCppMethod();
SomeCppClass::SomeCppClass() : jvm(NULL) {
    JavaVMInitArgs vm_args;
    JNIEnv * env;
    if (JNI_CreateJavaVM(&jvm, (void **)&env, &vm_args) != 0) {
        // some error handling
SomeCppClass::~SomeCppClass() {
    if (jvm != NULL) {
        jvm->DetachCurrentThread();
        jvm->DestroyJavaVM();
    jvm = NULL;
void SomeCppClass::someCppMethod() {
    JNIEnv * env;
    if (jvm->AttachCurrentThread((void **)&env, NULL) < 0) {
        // some error handling
}Regards