function aa...aa cannot be issued after function bb...bb is issued.

This function cannot be issued.

aa...aa: Function name (string of up to 31 characters)

bb...bb: Function name (string of up to 31 characters)

S: Returns this function as an issuing sequence error.

O: Check if the sequence of the functions issued by UAP is correct. If it is incorrect, correct the UAP. If it is correct, the test cannot be conducted in that issuance sequence.