Code 270-0037: Data record %1 cannot be inserted, changed or deleted
Issue Description & Safety Warning
The Heidenhain TNC Series CNC has triggered a critical Data record %1 cannot be inserted, changed or deleted alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
[Cause of error] There was an attempt to insert, change or delete a data record that either makes reference through a foreign key to a non-available data record or to which at least one other data record makes reference through a foreign key. The specified referential action would leave an invalid reference. [Error correction] Check the SQL statement and correct the references first.
Source: HEIDENHAIN NC Error Messages — TNC7/640/620/320/128, CNC PILOT 640, MANUALplus 620 (10/2023)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Heidenhain TNC Series CNC Alarms
Heidenhain controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code 270-0037 on the TNC Series CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Heidenhain's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 4497 Heidenhain TNC Series CNC codes.
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