Reference documentation and code samples for the Cloud Document AI v1 API enum DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType.
Types of occurrences of the entity type in the document. This
represents the number of instances, not mentions, of an entity.
For example, a bank statement might only have one
account_number, but this account number can be mentioned in several
places on the document. In this case, the account_number is
considered a REQUIRED_ONCE entity type. If, on the other hand, we
expect a bank statement to contain the status of multiple different
accounts for the customers, the occurrence type is set to
REQUIRED_MULTIPLE.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-19 UTC."],[[["\u003cp\u003eThe latest version of the \u003ccode\u003eDocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType\u003c/code\u003e enum is 3.19.0, with versions available back to 1.0.0 for the \u003ccode\u003eGoogle.Cloud.DocumentAI.V1\u003c/code\u003e API.\u003c/p\u003e\n"],["\u003cp\u003eThis enum defines how many times an entity type can appear in a document, distinguishing between instances and mentions of an entity.\u003c/p\u003e\n"],["\u003cp\u003eThe enum's available fields, such as \u003ccode\u003eOptionalMultiple\u003c/code\u003e, \u003ccode\u003eOptionalOnce\u003c/code\u003e, \u003ccode\u003eRequiredMultiple\u003c/code\u003e, \u003ccode\u003eRequiredOnce\u003c/code\u003e, and \u003ccode\u003eUnspecified\u003c/code\u003e, describe the frequency of entity type occurrences.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eDocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType\u003c/code\u003e is found in the namespace \u003ccode\u003eGoogle.Cloud.DocumentAI.V1\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eGoogle.Cloud.DocumentAI.V1.dll\u003c/code\u003e assembly contains the code for the \u003ccode\u003eDocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType\u003c/code\u003e enum.\u003c/p\u003e\n"]]],[],null,["# Cloud Document AI v1 API - Enum DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType (3.21.0)\n\nVersion latestkeyboard_arrow_down\n\n- [3.21.0 (latest)](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/latest/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.20.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.20.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.19.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.19.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.18.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.18.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.17.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.17.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.16.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.16.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.15.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.15.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.14.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.14.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.13.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.13.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.12.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.12.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.11.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.11.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.10.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.10.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.9.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.9.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.8.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.8.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.7.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.7.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.6.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.6.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.5.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.5.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.4.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.4.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.3.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.3.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.2.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.2.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.1.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.1.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [3.0.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/3.0.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [2.0.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/2.0.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [1.5.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/1.5.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [1.4.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/1.4.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [1.3.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/1.3.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [1.2.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/1.2.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [1.1.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/1.1.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType)\n- [1.0.0](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/1.0.0/Google.Cloud.DocumentAI.V1.DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType) \n\n public enum DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType\n\nReference documentation and code samples for the Cloud Document AI v1 API enum DocumentSchema.Types.EntityType.Types.Property.Types.OccurrenceType.\n\nTypes of occurrences of the entity type in the document. This\nrepresents the number of instances, not mentions, of an entity.\nFor example, a bank statement might only have one\n`account_number`, but this account number can be mentioned in several\nplaces on the document. In this case, the `account_number` is\nconsidered a `REQUIRED_ONCE` entity type. If, on the other hand, we\nexpect a bank statement to contain the status of multiple different\naccounts for the customers, the occurrence type is set to\n`REQUIRED_MULTIPLE`.\n\nNamespace\n---------\n\n[Google.Cloud.DocumentAI.V1](/dotnet/docs/reference/Google.Cloud.DocumentAI.V1/latest/Google.Cloud.DocumentAI.V1)\n\nAssembly\n--------\n\nGoogle.Cloud.DocumentAI.V1.dll"]]