Resource Assignment API giving error as ‘’The task assignment reference passed is invalid or the tas

 Hi All,

During loading resource assignments to tasks using the Resource Assignment API I am getting error,please help me in resolving this issue.

I have done the user as an team member setup

I am using the sequence of api’s as below

 pa_interface_utils_pub.set_global_info,

 pa_task_assignments_pub.Init_Task_Assignments,                               

 pa_task_assignments_pub.load_task_asgmt_periods and

 pa_task_assignments_pub.Execute_Create_Task_Asgmts

while running upto load_task_asgmt_periods, API status is Success but while executing pa_task_assignments_pub.Execute_Create_Task_Asgmts its throwing an error as ‘’The task assignment reference passed is invalid or the task assignment does not exist’’.