# A-not-B error

> Incomplete schema of object permanence

**Wikidata**: [Q278067](https://www.wikidata.org/wiki/Q278067)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/A-not-B_error)  
**Source**: https://4ort.xyz/entity/a-not-b-error


## References

1. Freebase Data Dumps. 2013