message: docs: Document the new IE034 error
diff: @@ -119,7 +119,6 @@ to be reported. Make sure that
  allocations have been closed and have released the allocated GRT again. In
  this case, the situation should resolve automatically.
  -
  ## IE006
  **Summary**
  @@ -156,7 +155,7 @@ TODO
  Failed to query subgraph deployments worth indexing.
  -**Description*
  +**Description**
  The indexer service or agent failed querying the network subgraph via the URL
  defined in one of the following environment variables / command-line options:
  @@ -482,3 +481,19 @@ Failed to process free query.
  **Solution**
  TODO
  +
  +## IE034
  +
  +**Summary**
  +
  +Not authorized as an operator for the indexer.
  +
  +**Description**
  +
  +This error is reported when the indexer and operator addresses are different
  +and the operator address is not registered as an operator for the indexer.
  +
  +**Solution**
  +
  +Add the operator address to your indexer in the explorer. The operator address
  +is included in the error message.
  