The data held in the MERLIN database included the following:-

• ERM ('Equipment Registration Mark') is the original vehicle registration Mark
• Asset Code is the vehicle's NATO Designation Code
• Designation is the agreed description of the vehicle, which was standardised across NATO
• Holding UIN is the MOD code for the unit to which the vehicle is currently attached. This is blank if the vehicle is no longer in service
• Unit title is the name (in plain English) of the holding unit
• Chassis number is self-explanatory
• Engine number is self-explanatory
• Contract number refers to the contract under which the vehicle was acquired or fitted out
• Colour is self-explanatory
• Date into service is the date on which the vehicle entered service
• Cast date is the date that the vehicle was removed ('cast from') the vehicle census, and thus no longer available for service
• Movement history records the units where the vehicle saw service
  • RIV no. is the authority to move the vehicle from a unit
  • RIV date is the date of that authority
  • UIN is the unit code for the receiving unit
  • Unti title is the name if the unit in p-lain English
  • RCP no. is the authority to receive the vehicle into a new unit
  • RCP date is the date of that authority

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