Sitecore Azure Search - Invalid field name

Question

while rebuilding the sitecore_master_index the rebuild is taking forever and when taking a look at the logs i found several errors similar to the below.

any idea ? Thank you

17064 2017:06:16 17:29:12 WARN Crawler : AddRecursive DoItemAdd failed - {2DEC7F1B-A664-4EC2-9CBB-D661763B952A} Exception: System.AggregateException Message: One or more errors occurred. Source: mscorlib at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions) at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken) at System.Threading.Tasks.Parallel.ForWorker[TLocal](Int32 fromInclusive, Int32 toExclusive, ParallelOptions parallelOptions, Action1 body, Action2 bodyWithState, Func4 bodyWithLocal, Func1 localInit, Action1 localFinally) at System.Threading.Tasks.Parallel.ForEachWorker[TSource,TLocal](IEnumerable1 source, ParallelOptions parallelOptions, Action1 body, Action2 bodyWithState, Action3 bodyWithStateAndIndex, Func4 bodyWithStateAndLocal, Func5 bodyWithEverything, Func1 localInit, Action1 localFinally) at System.Threading.Tasks.Parallel.ForEach[TSource](IEnumerable1 source, Action1 body) at Sitecore.ContentSearch.Azure.Http.CompositeSearchService.PostDocuments(ICloudBatch batch) at Sitecore.ContentSearch.Azure.CloudSearchUpdateContext.Commit() at Sitecore.ContentSearch.CommitPolicyExecutor.IndexModified(IProviderUpdateContext context, Object document, IndexOperation operation) at Sitecore.ContentSearch.Azure.CloudSearchUpdateContext.AddDocument(Object itemToAdd, IExecutionContext[] executionContexts) at Sitecore.ContentSearch.Azure.CloudSearchIndexOperations.Add(IIndexable indexable, IProviderUpdateContext context, ProviderIndexConfiguration indexConfiguration) at Sitecore.ContentSearch.SitecoreItemCrawler.DoAdd(IProviderUpdateContext context, SitecoreIndexableItem indexable) at Sitecore.ContentSearch.HierarchicalDataCrawler1.CrawlItem(T indexable, IProviderUpdateContext context, CrawlState`1 state)

Nested Exception

Exception: Sitecore.ContentSearch.Azure.Http.Exceptions.BadRequestException Message: Error in the request URI, headers, or body Source: Sitecore.ContentSearch.Azure at Sitecore.ContentSearch.Azure.Http.SearchServiceClient.EnsureSuccessStatusCode(HttpResponseMessage response) at Sitecore.ContentSearch.Azure.Http.SearchServiceClient.CreateIndex(IEnumerable1 fields) at Sitecore.ContentSearch.Azure.Schema.SearchServiceSchemaSynchronizer.SyncRemoteService(IEnumerable1 sourceSchema, IEnumerable1 incomingSchema) at Sitecore.ContentSearch.Azure.Schema.SearchServiceSchemaSynchronizer.<>c__DisplayClass11_0.<EnsureIsInSync>b__0() at Sitecore.ContentSearch.Azure.Utils.Retryer.RetryPolicy.Execute(Action action) at Sitecore.ContentSearch.Azure.Http.SearchService.PostDocuments(ICloudBatch batch) at Sitecore.ContentSearch.Azure.Http.CompositeSearchService.<>c__DisplayClass11_0.<PostDocuments>b__0(ISearchService searchService) at System.Threading.Tasks.Parallel.<>c__DisplayClass17_01.b__1() at System.Threading.Tasks.Task.InnerInvokeWithArg(Task childTask)
at System.Threading.Tasks.Task.<>c__DisplayClass176_0.b__0(Object )

Nested Exception

Exception: Sitecore.ContentSearch.Azure.Http.Exceptions.AzureSearchServiceRESTCallException Message: {"error":{"code":"","message":"The request is invalid. Details: definition : Invalid field name: '301redirect'. Field names must begin with a letter and can contain only letters, digits, or underscore ('_').\r\n"}}

Answer 1

This is an error from Azure Search Service. Can you try to rename fieldname 301redirect to something else to not start with digits.

Please have a look here: https://docs.microsoft.com/en-us/rest/api/searchservice/create-index

The index name must be lower case, start with a letter or number, have no slashes or dots, and be less than 128 characters. After starting the index name with a letter or number, the rest of the name can include any letter, number and dashes, as long as the dashes are not consecutive.

Answer 2

Thank you Sitecore Climber, but changing the field name was not an option, i ended up excluding those fields (invalid name, size limits such as Text and Media fields) from the index using AddExcludedField.