TooFew
Error v151 → current 14.7Cannot decrease the request reference count below zero. This typically indicates an internal bookkeeping issue where unrequest was called more times than request.
Encountered by: developers
Why This Error Exists
Request reference counts cannot go negative. This error indicates a mismatch between request and unrequest calls, which should not happen in normal operation.
From Chain Metadata
Too few hashes were requested to be upgraded (i.e. zero).
What This Means
Cannot decrease the request reference count below zero. This typically indicates an internal bookkeeping issue where unrequest was called more times than request.
Common Causes
- Unrequest called without a matching request
- Internal reference count underflow
How to Fix
- Query Preimage.RequestStatusFor to check the current reference count
- This is likely a bug — report it if encountered in normal operation
Storage to Check
Runtime Info
- Pallet Index
- 14
- Error Index
- 7
- Error Code
- 14.7
- Runtime Version
- v393