# PB013: sparse-indices-not-lexicographic

**Code:** `PB013`

**Name:** `sparse-indices-not-lexicographic`

**Severity:** error

**Category:** protobuf

**Target:** value

**Fixable:** No

## Message

Sparse tensor indices are not in lexicographic order.

## Suggestion

Sort the sparse tensor indices in lexicographic order.

## Details

Multi-dimensional indices in a SparseTensorProto must be in
lexicographic sorted order.