If you can’t find an exact match, look for discs that cover your even if the string differs. For example, “NDDNW57” might be the next update. Often the system will accept a slightly newer regional disc.

DISC NDDNW56 (hereafter “the Disc”) is an asset identifier for a geospatial dataset requiring correction and alignment with authoritative references. Common problems include wrong spatial reference, datum mismatches, inconsistent attribute schemas, and local distortions. This work defines a pragmatic pipeline to produce a corrected map that is traceable, reproducible, and fit for downstream analysis.

The "Please insert correct map disc" error on the Toyota NDDN-W56