diff --git a/common/constants.ts b/common/constants.ts
index 76435d0b..e52e4028 100644
--- a/common/constants.ts
+++ b/common/constants.ts
@@ -77,31 +77,81 @@ export const SEARCH_CONNECTORS_NODE_API_PATH = `${BASE_CONNECTOR_NODE_API_PATH}/
  * based on the specified remote model from a remote service, if found
  */
 
-// Cohere
-export const COHERE_DIMENSIONS = {
-  [`embed-english-v3.0`]: 1024,
-  [`embed-english-light-v3.0`]: 384,
-  [`embed-multilingual-v3.0`]: 1024,
-  [`embed-multilingual-light-v3.0`]: 384,
-  [`embed-english-v2.0`]: 4096,
-  [`embed-english-light-v2.0`]: 1024,
-  [`embed-multilingual-v2.0`]: 768,
+interface RemoteEmbeddingModelConfig {
+  dimension: number;
+  fieldName: string;
+}
+
+// Amazon BedRock
+export const BEDROCK_CONFIGS = {
+  [`amazon.titan-embed-text-v1`]: {
+    dimension: 1536,
+    fieldName: 'embedding',
+  } as RemoteEmbeddingModelConfig,
+  [`amazon.titan-embed-text-v2`]: {
+    dimension: 1024,
+    fieldName: 'embedding',
+  } as RemoteEmbeddingModelConfig,
+  [`amazon.titan-embed-image-v1`]: {
+    dimension: 1024,
+    fieldName: 'embedding',
+  } as RemoteEmbeddingModelConfig,
+  [`cohere.embed-english-v3`]: {
+    dimension: 1024,
+    fieldName: 'embeddings',
+  } as RemoteEmbeddingModelConfig,
+  [`cohere.embed-multilingual-v3`]: {
+    dimension: 1024,
+    fieldName: 'embeddings',
+  } as RemoteEmbeddingModelConfig,
 };
 
-// OpenAI
-export const OPENAI_DIMENSIONS = {
-  [`text-embedding-3-small`]: 1536,
-  [`text-embedding-3-large`]: 3072,
-  [`text-embedding-ada-002`]: 1536,
+// Cohere
+export const COHERE_CONFIGS = {
+  [`embed-english-v3.0`]: {
+    dimension: 1024,
+    fieldName: 'embeddings',
+  } as RemoteEmbeddingModelConfig,
+  [`embed-english-light-v3.0`]: {
+    dimension: 384,
+    fieldName: 'embeddings',
+  } as RemoteEmbeddingModelConfig,
+  [`embed-multilingual-v3.0`]: {
+    dimension: 1024,
+    fieldName: 'embeddings',
+  } as RemoteEmbeddingModelConfig,
+  [`embed-multilingual-light-v3.0`]: {
+    dimension: 384,
+    fieldName: 'embeddings',
+  } as RemoteEmbeddingModelConfig,
+  [`embed-english-v2.0`]: {
+    dimension: 4096,
+    fieldName: 'embeddings',
+  } as RemoteEmbeddingModelConfig,
+  [`embed-english-light-v2.0`]: {
+    dimension: 1024,
+    fieldName: 'embeddings',
+  } as RemoteEmbeddingModelConfig,
+  [`embed-multilingual-v2.0`]: {
+    dimension: 768,
+    fieldName: 'embeddings',
+  } as RemoteEmbeddingModelConfig,
 };
 
-// Amazon BedRock
-export const BEDROCK_DIMENSIONS = {
-  [`amazon.titan-embed-text-v1`]: 1536,
-  [`amazon.titan-embed-text-v2`]: 1024,
-  [`amazon.titan-embed-image-v1`]: 1024,
-  [`cohere.embed-english-v3`]: 1024, // same as Cohere directly
-  [`cohere.embed-multilingual-v3`]: 1024, // same as Cohere directly
+// OpenAI
+export const OPENAI_CONFIGS = {
+  [`text-embedding-3-small`]: {
+    dimension: 1536,
+    fieldName: 'embedding',
+  } as RemoteEmbeddingModelConfig,
+  [`text-embedding-3-large`]: {
+    dimension: 3072,
+    fieldName: 'embedding',
+  } as RemoteEmbeddingModelConfig,
+  [`text-embedding-ada-002`]: {
+    dimension: 1536,
+    fieldName: 'embedding',
+  } as RemoteEmbeddingModelConfig,
 };
 
 /**
diff --git a/public/pages/workflow_detail/workflow_inputs/ingest_inputs/advanced_settings.tsx b/public/pages/workflow_detail/workflow_inputs/ingest_inputs/advanced_settings.tsx
index a9bf8f42..cfbebf13 100644
--- a/public/pages/workflow_detail/workflow_inputs/ingest_inputs/advanced_settings.tsx
+++ b/public/pages/workflow_detail/workflow_inputs/ingest_inputs/advanced_settings.tsx
@@ -17,9 +17,12 @@ import { getIn, useFormikContext } from 'formik';
 import { WorkflowFormValues } from '../../../../../common';
 import { AppState } from '../../../../store';
 import {
-  getEmbeddingDimensions,
+  getEmbeddingField,
+  getEmbeddingModelDimensions,
+  getUpdatedIndexMappings,
   getUpdatedIndexSettings,
   isKnnIndex,
+  removeVectorFieldFromIndexMappings,
 } from '../../../../utils';
 
 interface AdvancedSettingsProps {}
@@ -30,8 +33,10 @@ interface AdvancedSettingsProps {}
 export function AdvancedSettings(props: AdvancedSettingsProps) {
   const { values, setFieldValue } = useFormikContext<WorkflowFormValues>();
   const { models, connectors } = useSelector((state: AppState) => state.ml);
-  const ingestProcessors = Object.values(values?.ingest?.enrich) as [];
-  const ingestProcessorModelIds = ingestProcessors
+  const ingestMLProcessors = (Object.values(
+    values?.ingest?.enrich
+  ) as any[]).filter((ingestProcessor) => ingestProcessor?.model !== undefined);
+  const ingestProcessorModelIds = ingestMLProcessors
     .map((ingestProcessor) => ingestProcessor?.model?.id as string | undefined)
     .filter((modelId) => !isEmpty(modelId));
   const indexMappingsPath = 'ingest.index.mappings';
@@ -40,7 +45,7 @@ export function AdvancedSettings(props: AdvancedSettingsProps) {
   const curSettings = getIn(values, indexSettingsPath);
 
   // listen on when processor with models are added / removed. dynamically update index
-  // mappings and settings, if applicable.
+  // settings to be knn-enabled or knn-disabled.
   useEffect(() => {
     if (ingestProcessorModelIds.length > 0) {
       ingestProcessorModelIds.forEach((ingestProcessorModelId) => {
@@ -49,9 +54,11 @@ export function AdvancedSettings(props: AdvancedSettingsProps) {
         );
         if (processorModel?.connectorId !== undefined) {
           const processorConnector = connectors[processorModel?.connectorId];
-          const dimension = getEmbeddingDimensions(processorConnector);
+          const dimension = getEmbeddingModelDimensions(processorConnector);
+
+          // If a dimension is found, it is a known embedding model.
+          // Ensure the index is configured to be knn-enabled.
           if (dimension !== undefined) {
-            // TODO: update mappings
             if (!isKnnIndex(curSettings)) {
               setFieldValue(
                 indexSettingsPath,
@@ -62,7 +69,6 @@ export function AdvancedSettings(props: AdvancedSettingsProps) {
         }
       });
     } else {
-      // TODO: update mappings
       if (isKnnIndex(curSettings)) {
         setFieldValue(
           indexSettingsPath,
@@ -72,6 +78,43 @@ export function AdvancedSettings(props: AdvancedSettingsProps) {
     }
   }, [ingestProcessorModelIds.length]);
 
+  // listener on when there are updates to any ingest processors. Try to update
+  // any index mappings accordingly, such as setting the knn_vector mappings
+  // for models that output vector embeddings, or removing any mappings, if no ML
+  // processor defined.
+  useEffect(() => {
+    if (ingestMLProcessors.length > 0) {
+      ingestMLProcessors.forEach((ingestMLProcessor) => {
+        const processorModel = Object.values(models).find(
+          (model) => model.id === ingestMLProcessor?.model?.id
+        );
+        if (processorModel?.connectorId !== undefined) {
+          const processorConnector = connectors[processorModel?.connectorId];
+          const dimension = getEmbeddingModelDimensions(processorConnector);
+          const embeddingFieldName = getEmbeddingField(
+            processorConnector,
+            ingestMLProcessor
+          );
+          if (embeddingFieldName !== undefined && dimension !== undefined) {
+            setFieldValue(
+              indexMappingsPath,
+              getUpdatedIndexMappings(
+                curMappings,
+                embeddingFieldName,
+                dimension
+              )
+            );
+          }
+        }
+      });
+    } else {
+      setFieldValue(
+        indexMappingsPath,
+        removeVectorFieldFromIndexMappings(curMappings)
+      );
+    }
+  }, [getIn(values, 'ingest.enrich')]);
+
   return (
     <EuiFlexGroup direction="column">
       <EuiFlexItem grow={false}>
diff --git a/public/pages/workflows/new_workflow/quick_configure_inputs.tsx b/public/pages/workflows/new_workflow/quick_configure_inputs.tsx
index 7b062c5f..90626b5a 100644
--- a/public/pages/workflows/new_workflow/quick_configure_inputs.tsx
+++ b/public/pages/workflows/new_workflow/quick_configure_inputs.tsx
@@ -27,7 +27,7 @@ import {
   WORKFLOW_TYPE,
 } from '../../../../common';
 import { AppState } from '../../../store';
-import { getEmbeddingDimensions, parseModelInputs } from '../../../utils';
+import { getEmbeddingModelDimensions, parseModelInputs } from '../../../utils';
 import { get } from 'lodash';
 
 interface QuickConfigureInputsProps {
@@ -120,7 +120,7 @@ export function QuickConfigureInputs(props: QuickConfigureInputsProps) {
       if (connector !== undefined) {
         setFieldValues({
           ...fieldValues,
-          embeddingLength: getEmbeddingDimensions(connector),
+          embeddingLength: getEmbeddingModelDimensions(connector),
         });
       }
     }
diff --git a/public/utils/utils.ts b/public/utils/utils.ts
index acf5aaf4..c33a290b 100644
--- a/public/utils/utils.ts
+++ b/public/utils/utils.ts
@@ -5,7 +5,7 @@
 
 import yaml from 'js-yaml';
 import jsonpath from 'jsonpath';
-import { escape, get, isEmpty, set } from 'lodash';
+import { escape, findKey, get, isEmpty, set, unset } from 'lodash';
 import semver from 'semver';
 import queryString from 'query-string';
 import { useLocation } from 'react-router-dom';
@@ -27,10 +27,12 @@ import {
   WORKFLOW_STEP_TYPE,
   Workflow,
   WorkflowResource,
-  BEDROCK_DIMENSIONS,
-  COHERE_DIMENSIONS,
-  OPENAI_DIMENSIONS,
+  BEDROCK_CONFIGS,
+  COHERE_CONFIGS,
+  OPENAI_CONFIGS,
   customStringify,
+  NO_TRANSFORMATION,
+  TRANSFORM_TYPE,
 } from '../../common';
 import { getCore, getDataSourceEnabled } from '../services';
 import {
@@ -40,6 +42,7 @@ import {
   ModelInputMap,
   ModelOutputMap,
   OutputMapEntry,
+  OutputMapFormValue,
   QueryParam,
 } from '../../common/interfaces';
 import * as pluginManifest from '../../opensearch_dashboards.json';
@@ -610,7 +613,7 @@ export function injectParameters(
 }
 
 // Fetch embedding dimensions, if the selected model is a known one
-export function getEmbeddingDimensions(
+export function getEmbeddingModelDimensions(
   connector: Connector
 ): number | undefined {
   // some APIs allow specifically setting the dimensions at runtime,
@@ -620,11 +623,11 @@ export function getEmbeddingDimensions(
   } else if (connector.parameters?.model !== undefined) {
     return (
       // @ts-ignore
-      COHERE_DIMENSIONS[connector.parameters?.model] ||
+      COHERE_CONFIGS[connector.parameters?.model]?.dimension ||
       // @ts-ignore
-      OPENAI_DIMENSIONS[connector.parameters?.model] ||
+      OPENAI_CONFIGS[connector.parameters?.model]?.dimension ||
       // @ts-ignore
-      BEDROCK_DIMENSIONS[connector.parameters?.model]
+      BEDROCK_CONFIGS[connector.parameters?.model]?.dimension
     );
   } else {
     return undefined;
@@ -655,3 +658,118 @@ export function getUpdatedIndexSettings(
     return existingSettings;
   }
 }
+
+// Get any embedding fields, if a known embedding model
+function getEmbeddingFieldFromConnector(
+  connector: Connector
+): string | undefined {
+  if (connector.parameters?.model !== undefined) {
+    return (
+      // @ts-ignore
+      COHERE_CONFIGS[connector.parameters?.model]?.fieldName ||
+      // @ts-ignore
+      OPENAI_CONFIGS[connector.parameters?.model]?.fieldName ||
+      // @ts-ignore
+      BEDROCK_CONFIGS[connector.parameters?.model]?.fieldName
+    );
+  } else {
+    return undefined;
+  }
+}
+
+// Try to determine the embedding field based on the processor config.
+// First check if it is a known model, then make a best guess based on
+// the output map configuration, if there is any transformations made
+export function getEmbeddingField(
+  connector: Connector,
+  processorConfig: any
+): string | undefined {
+  let embeddingField = getEmbeddingFieldFromConnector(connector);
+  const outputMap = processorConfig?.output_map as OutputMapFormValue;
+  if (
+    outputMap !== undefined &&
+    outputMap[0] !== undefined &&
+    Array.isArray(outputMap[0]) &&
+    outputMap[0].length > 0
+  ) {
+    const relevantOutputMapEntry =
+      embeddingField !== undefined
+        ? outputMap[0].find(
+            (outputMapEntry) => outputMapEntry.key === embeddingField
+          )
+        : outputMap[0][0];
+    switch (relevantOutputMapEntry?.value?.transformType) {
+      case TRANSFORM_TYPE.FIELD: {
+        embeddingField = relevantOutputMapEntry?.value?.value;
+        break;
+      }
+      case TRANSFORM_TYPE.EXPRESSION: {
+        embeddingField = get(relevantOutputMapEntry, 'value.nestedVars.0.name');
+        break;
+      }
+      case NO_TRANSFORMATION:
+      case undefined:
+      default: {
+        embeddingField = relevantOutputMapEntry?.key;
+        break;
+      }
+    }
+    // if (relevantOutputMapEntry?.value?.transformType === NO_TRANSFORMATION) {
+    //   embeddingField = relevantOutputMapEntry?.key;
+    // } else if (
+    //   relevantOutputMapEntry?.value?.transformType === TRANSFORM_TYPE.FIELD
+    // ) {
+    //   embeddingField = relevantOutputMapEntry?.value?.value;
+    // } else if (
+    //   relevantOutputMapEntry?.value?.transformType === TRANSFORM_TYPE.EXPRESSION
+    // ) {
+    //   embeddingField = get(relevantOutputMapEntry, 'value.nestedVars.0.name');
+    // }
+  }
+  return embeddingField;
+}
+
+// Update the index mappings based on parameters passed.
+// Currently used for updating the knn_vector field configuration, & removing
+// any old/existing knn_vector field in the process.
+export function getUpdatedIndexMappings(
+  existingMappings: string,
+  embeddingFieldName: string,
+  dimension: number
+): string {
+  try {
+    const mappingsWithRemovedVectorField = removeVectorFieldFromIndexMappings(
+      existingMappings
+    );
+    return customStringify(
+      set(
+        JSON.parse(mappingsWithRemovedVectorField),
+        `properties.${embeddingFieldName}`,
+        {
+          type: 'knn_vector',
+          dimension,
+        }
+      )
+    );
+  } catch {
+    return existingMappings;
+  }
+}
+
+export function removeVectorFieldFromIndexMappings(
+  existingMappings: string
+): string {
+  try {
+    let existingMappingsObj = JSON.parse(existingMappings);
+    const existingEmbeddingField = findKey(
+      existingMappingsObj?.properties,
+      (field) => field.type === 'knn_vector'
+    );
+    if (existingEmbeddingField !== undefined) {
+      unset(existingMappingsObj?.properties, existingEmbeddingField);
+    }
+    return customStringify(existingMappingsObj);
+  } catch {
+    return existingMappings;
+  }
+}