Input for function <Function name> is received while expecting input for function <Function name>.
There is only one function in the mapping and the value of sequence ID is not 1, or you have more than one function in the mapping and the order of SequenceID is not in sequential order. For example, the first row comes into the RFCMSFunctionCall Custom transformation with SeqID = 1, the second row comes into the RFCMSFunctionCall Custom transformation with SeqID = 3.
The RFCFunctionCall Custom transformation expects the SequenceID to increase by increment of 1 from the previous SequenceID. Check the data in the PreparedData targets.