Providing a chain of tokenized error and state information for a call stack

An arrangement is provided for generating an error chain in a call stack. A function is invoked to perform a functionality. If an error occurs during performing the first function, errors including the ones contained in an error chain, created based on at least one context specific error state and represented by an error tokan, and the error, occurred during said performing the functionality, are processed. The function then returns to another function that invokes it either with a new token error token representing a new error chain containing the error occurred and the errors contained in the error chain or with an error status. If the function does not error, it returns a normal status to the other function that invokes it.