inconsistency
Inconsistency occurs when data transmission unitsare no longer consistent. A distinction is made here between data packets that are formally inconsistent because their block structure does not correspond to the agreements and those that are procedurally inconsistent because an error has been detected in the user data during the parity check by the frame check sequence( FCS).
In data sets, inconsistency occurs when the same words are spelled differently or replaced by abbreviations, such as plus as plus or respectively as and.