I am getting an error by creating a relationship between two tasks with BAPI_BUS2175_RELATION_ADD.
The error is: E DPR_BAPI 149 Error occurred when creating the relationship
The task id's I use are below the same phase. Following inputs i make:
TASK_GUID <task_guid from predecessor>
IV_RELATED_TASK_GUID <task_guid from successor>
Can anyone help me, what I'm doing wrong?