diff --git a/apps/web/src/lib/server/appConfig/index.ts b/apps/web/src/lib/server/appConfig/index.ts
index f8a2c4c..352c030 100644
--- a/apps/web/src/lib/server/appConfig/index.ts
+++ b/apps/web/src/lib/server/appConfig/index.ts
@@ -1,22 +1,11 @@
-import { PipelinesController, validateConfigs } from '@onaio/symbology-calc-core';
+import { PipelinesController } from '@onaio/symbology-calc-core';
 import type { SingleApiSymbolConfig } from 'src/lib/shared/types';
 import { geoSymbolLogger } from '../logger/winston';
 import { allSymbolConfigsAccessor } from '$lib/server/constants';
 import { uniqWith } from 'lodash-es';
-import yup from 'yup';
-import type { Config } from '@onaio/symbology-calc-core';
 import { getConfig } from './utils';
 import { readMetricOverride, writePripelineMetrics } from '../logger/configMetrics';
 
-export function webValidateConfigs(config: Config) {
-	const extraSchema = yup.object().shape({
-		uuid: yup.string().uuid().required('Symbology config does not have a uuid')
-	});
-
-	validateConfigs(config);
-	extraSchema.validateSync(config);
-}
-
 export function getAllSymbologyConfigs() {
 	const rawSymbologyConfigs = getConfig(
 		allSymbolConfigsAccessor,
@@ -31,7 +20,6 @@ export function getAllSymbologyConfigs() {
 			readMetric: readMetricOverride
 		};
 	});
-	allSymbologyConfigs.forEach(webValidateConfigs);
 	const uniqAllSymbolConfigs = uniqWith(allSymbologyConfigs, (config1, config2) => {
 		return config1.uuid === config2.uuid;
 	});
diff --git a/apps/web/src/routes/configs/+server.ts b/apps/web/src/routes/configs/+server.ts
index 4c41714..8778865 100644
--- a/apps/web/src/routes/configs/+server.ts
+++ b/apps/web/src/routes/configs/+server.ts
@@ -40,7 +40,6 @@ export async function PUT({ request }) {
 		...configsByUuid,
 		[payload.uuid]: { ...payload, apiToken: configToBeReplaced.apiToken }
 	};
-	console.log({ newConfigs }, configToBeReplaced.apiToken);
 	const newDataConfigs = {
 		...data,
 		allSymbologyConfigs: Object.values(newConfigs)
diff --git a/apps/web/src/routes/workflows/+page.server.ts b/apps/web/src/routes/workflows/+page.server.ts
index 0c29882..77511d7 100644
--- a/apps/web/src/routes/workflows/+page.server.ts
+++ b/apps/web/src/routes/workflows/+page.server.ts
@@ -6,12 +6,15 @@ import type { ConfigRunner } from '@onaio/symbology-calc-core';
 export function load() {
 	const configs = getClientSideSymbologyConfigs();
 	const ConfigsWithMetrics = configs.map((config) => {
-		const metricForThisConfig = getLastPipelineMetricForConfig(config.uuid);
-		const isRunning = (pipelineController.getPipelines(config.uuid) as ConfigRunner)?.isRunning();
+		const configId = config.uuid;
+		const metricForThisConfig = getLastPipelineMetricForConfig(configId);
+		const pipeLineRunner = pipelineController.getPipelines(configId) as ConfigRunner;
+		const isRunning = pipeLineRunner?.isRunning();
 		return {
 			...config,
 			metric: metricForThisConfig,
-			isRunning
+			isRunning,
+			invalidityErrror: pipeLineRunner.invalidError
 		};
 	});
 	return {
diff --git a/apps/web/src/routes/workflows/+page.svelte b/apps/web/src/routes/workflows/+page.svelte
index 069eb89..f74a916 100644
--- a/apps/web/src/routes/workflows/+page.svelte
+++ b/apps/web/src/routes/workflows/+page.svelte
@@ -90,6 +90,13 @@
 					</button>
 				</div>
 				<div class="card-body">
+					{#if config.invalidityErrror !== null}
+						<div class="card mb-1">
+							<div class="card-body">
+								<span class="text-danger">{config.invalidityErrror}</span>
+							</div>
+						</div>
+					{/if}
 					<dl class="row">
 						<dt class="col-sm-3">API Base url</dt>
 						<dd class="col-sm-9">{config.baseUrl}</dd>
diff --git a/packages/core/README.md b/packages/core/README.md
index fb9dea8..90c389f 100644
--- a/packages/core/README.md
+++ b/packages/core/README.md
@@ -76,6 +76,10 @@ export interface Config {
  // cron-like syntax that represents when the pipeline represented by this config runs.
  // this can be more easily generated using an online tool like https://crontab.cronhub.io/
  schedule: CronTabString;
+ // how many registration form submissions to process at a time.
+ regFormSubmissionChunks?: number;
+ // store metric; progress information regarding a running pipeline or the last run of an pipeline
+ writeMetric: WriteMetric;
 }
 
 ```
diff --git a/packages/core/src/evaluator/configRunner.ts b/packages/core/src/evaluator/configRunner.ts
index f5d2780..3de27ad 100644
--- a/packages/core/src/evaluator/configRunner.ts
+++ b/packages/core/src/evaluator/configRunner.ts
@@ -5,7 +5,8 @@ import {
   createInfoLog,
   createErrorLog,
   defaultWriteMetric,
-  colorDeciderFactory
+  colorDeciderFactory,
+  validateConfigs
 } from '../helpers/utils';
 import cron from 'node-cron';
 import { createMetricFactory } from './helpers/utils';
@@ -22,9 +23,19 @@ export class ConfigRunner {
   public config: Config;
   /** Whether pipeline/runner is currently evaluating */
   private running = false;
+  /** request abort controller */
+  private abortController;
+  /** stores validity of config */
+  public invalidError: string | null = null;
 
   constructor(config: Config) {
     this.config = config;
+    this.abortController = new AbortController();
+    try {
+      validateConfigs(config);
+    } catch (err: unknown) {
+      this.invalidError = (err as Error).message;
+    }
   }
 
   /** Runs the pipeline, generator that yields metric information regarding the current run */
@@ -37,14 +48,11 @@ export class ConfigRunner {
       logger,
       baseUrl,
       apiToken,
-      requestController,
       uuid: configId,
       regFormSubmissionChunks: facilityProcessingChunks
     } = config;
     const regFormSubmissionChunks = facilityProcessingChunks ?? 1000;
 
-    this.running = true;
-
     const startTime = Date.now();
     const createMetric = createMetricFactory(startTime, configId);
     let evaluatedSubmissions = 0;
@@ -62,13 +70,13 @@ export class ConfigRunner {
       totalRegFormSubmissions
     );
 
-    const service = new OnaApiService(baseUrl, apiToken, logger, requestController);
+    const service = new OnaApiService(baseUrl, apiToken, logger, this.abortController);
     const colorDecider = colorDeciderFactory(symbolConfig, logger);
 
     abortableBlock: {
       const regForm = await service.fetchSingleForm(regFormId);
       if (regForm.isFailure) {
-        return createMetric(
+        yield createMetric(
           evaluatedSubmissions,
           notModifiedWithoutError,
           notModifiedWithError,
@@ -76,6 +84,7 @@ export class ConfigRunner {
           totalRegFormSubmissions,
           true
         );
+        return;
       }
       const regFormSubmissionsNum = regForm.getValue()[numOfSubmissionsAccessor];
       totalRegFormSubmissions = regFormSubmissionsNum;
@@ -140,24 +149,28 @@ export class ConfigRunner {
       totalRegFormSubmissions,
       true
     );
-    this.running = false;
   }
 
   /** Wrapper  around the transform generator, collates the metrics and calls a callback that
    * inverts the control of writing the metric information to the configs writeMetric method.
    */
   async transform() {
-    // create a function that parses the config and supplies default values.
     const config = this.config;
+    if (this.invalidError) {
+      return Result.fail(`Configuration is not valid, ${this.invalidError}`);
+    }
+    // create a function that parses the config and supplies default values.
     const WriteMetric = config.writeMetric ?? defaultWriteMetric;
     if (this.running) {
       return Result.fail('Pipeline is already running.');
     } else {
+      this.running = true;
       let finalMetric;
       for await (const metric of this.transformGenerator()) {
         WriteMetric(metric);
         finalMetric = metric;
       }
+      this.running = false;
       return Result.ok(finalMetric);
     }
   }
@@ -176,11 +189,7 @@ export class ConfigRunner {
 
   /** Cancel evaluation using a configured abortController */
   cancel() {
-    const config = this.config;
-    const abortController = config.requestController;
-    if (!abortController) {
-      return Result.fail(`Abort controller not set for config : ${config.uuid}`);
-    }
+    const abortController = this.abortController;
     if (!this.running) {
       return;
     }
@@ -198,4 +207,9 @@ export class ConfigRunner {
   isRunning() {
     return this.running;
   }
+
+  /** Whether config for this runner is valid */
+  isValid() {
+    return this.invalidError === null;
+  }
 }
diff --git a/packages/core/src/evaluator/pipelinesController.ts b/packages/core/src/evaluator/pipelinesController.ts
index 22cb1d3..6f9dd90 100644
--- a/packages/core/src/evaluator/pipelinesController.ts
+++ b/packages/core/src/evaluator/pipelinesController.ts
@@ -4,8 +4,6 @@ import { ConfigRunner } from './configRunner';
 import { isEqual } from 'lodash-es';
 import { Result } from '../helpers/Result';
 
-console.log({ cron });
-
 interface GetConfigs {
   (): Config[];
 }
diff --git a/packages/core/src/evaluator/tests/fixtures/fixtures.ts b/packages/core/src/evaluator/tests/fixtures/fixtures.ts
index 8107583..84def04 100644
--- a/packages/core/src/evaluator/tests/fixtures/fixtures.ts
+++ b/packages/core/src/evaluator/tests/fixtures/fixtures.ts
@@ -7,10 +7,7 @@ import { defaultWriteMetric } from '../../../helpers/utils';
 export { form3623, form3623Submissions, form3624Submissions };
 
 export const apiToken = 'apiToken';
-export const createConfigs = (
-  loggerMock: jest.Mock,
-  controller = new AbortController()
-): Config => ({
+export const createConfigs = (loggerMock: jest.Mock): Config => ({
   uuid: 'uuid',
   regFormId: '3623',
   visitFormId: '3624',
@@ -80,6 +77,5 @@ export const createConfigs = (
   apiToken,
   baseUrl: 'https://test-api.ona.io',
   schedule: '* * * * *',
-  writeMetric: defaultWriteMetric,
-  requestController: controller
+  writeMetric: defaultWriteMetric
 });
diff --git a/packages/core/src/evaluator/tests/helpers.test.ts b/packages/core/src/evaluator/tests/helpers.test.ts
index 1a1e0e7..4b93191 100644
--- a/packages/core/src/evaluator/tests/helpers.test.ts
+++ b/packages/core/src/evaluator/tests/helpers.test.ts
@@ -167,7 +167,6 @@ describe('transform facility tests', () => {
     );
 
     expect(response.modified).toBeFalsy();
-    console.log(typeof response.error);
     expect(response.error).toEqual('400: {"message":"error"}: Network request failed.');
   });
 
diff --git a/packages/core/src/evaluator/tests/pipelinesController.test.ts b/packages/core/src/evaluator/tests/pipelinesController.test.ts
index 445e21d..34dab1b 100644
--- a/packages/core/src/evaluator/tests/pipelinesController.test.ts
+++ b/packages/core/src/evaluator/tests/pipelinesController.test.ts
@@ -24,7 +24,8 @@ jest.mock('node-cron', () => {
     // eslint-disable-next-line @typescript-eslint/no-unused-vars
     schedule: (cronString: string, _callback: () => unknown) => {
       return `task-${cronString}`;
-    }
+    },
+    validate: () => true
   };
 });
 
@@ -112,10 +113,11 @@ it('works correctly nominal case', async () => {
   const configRunner = pipelinesController.getPipelines(configs.uuid);
   const runner = configRunner as ConfigRunner;
   expect(runner.isRunning()).toBeFalsy();
+  expect(runner.isValid()).toBeTruthy();
   const response = runner.transform();
   expect(runner.isRunning()).toBeTruthy();
   const metric = await response;
-  console.log({ configRunner });
+
   expect(runner.isRunning()).toBeFalsy();
   expect(loggerMock.mock.calls).toEqual(logCalls);
   expect(metric.getValue()).toEqual({
@@ -140,12 +142,12 @@ it('error when fetching the registration form', async () => {
   nock(configs.baseUrl).get(`/${formEndpoint}/3623`).replyWithError('Could not find form with id');
 
   const pipelinesController = new PipelinesController(() => [configs]);
-  const configRunner = pipelinesController.getPipelines(configs.uuid);
+  const configRunner = pipelinesController.getPipelines(configs.uuid) as ConfigRunner;
   const runner = configRunner as ConfigRunner;
   await runner.transform().catch((err) => {
     throw err;
   });
-
+  expect(configRunner.isRunning()).toBeFalsy();
   expect(loggerMock.mock.calls).toEqual([
     [
       {
diff --git a/packages/core/src/helpers/types.ts b/packages/core/src/helpers/types.ts
index ad68012..c789d29 100644
--- a/packages/core/src/helpers/types.ts
+++ b/packages/core/src/helpers/types.ts
@@ -38,10 +38,8 @@ export interface Config {
   schedule: CronTabString;
   // how many registration form submissions to process at a time.
   regFormSubmissionChunks?: number;
-  // store metric; progress information regarding a running or the last run of an pipeline
+  // store metric; progress information regarding a running pipeline or the last run of an pipeline
   writeMetric: WriteMetric;
-  // Abort controller to abort evaluation of this pipeline
-  requestController: AbortController;
 }
 
 export enum PriorityLevel {
diff --git a/packages/core/src/services/onaApi/services.ts b/packages/core/src/services/onaApi/services.ts
index 14835eb..7183fd1 100644
--- a/packages/core/src/services/onaApi/services.ts
+++ b/packages/core/src/services/onaApi/services.ts
@@ -37,7 +37,6 @@ export const customFetch = async (input: RequestInfo, init?: RequestInit) => {
     }
   };
   const response = await persistentFetch(input, requestOptionsWithRetry).catch((err) => {
-    console.log('===>', err);
     throw Error(`${err.type}: ${err.name}: ${err.message}.`);
   });
   if (response?.ok) {
@@ -156,11 +155,8 @@ export class OnaApiService {
       const paginatedSubmissionsUrl = `${fullSubmissionsUrl}?${sParams.toString()}`;
 
       page = page + 1;
-      // const stop1StartFetchPage = performance.now(); //
-      console.log('We also got here');
       yield await customFetch(paginatedSubmissionsUrl, { ...this.getCommonFetchOptions() })
         .then((res) => {
-          console.log({ res });
           return (res.json() as Promise<FormSubmissionT[]>).then((res) => {
             this.logger?.(
               createInfoLog(
@@ -178,18 +174,6 @@ export class OnaApiService {
           );
           return Result.fail<FormSubmissionT[]>(err.message);
         });
-      // .finally(() => {
-      //   const stop2EndFetchPage = performance.now();
-      //   if (pageSize > 100) {
-      //     this.logger?.(
-      //       createInfoLog(
-      //         `Fetched page: ${page}: from ${stop1StartFetchPage} to ${stop2EndFetchPage} i.e in: ${
-      //           stop2EndFetchPage - stop1StartFetchPage
-      //         }`
-      //       )
-      //     );
-      //   }
-      // });
     } while (page * pageSize <= totalSubmissions);
   }
 
@@ -217,7 +201,6 @@ export class OnaApiService {
     };
     const fullEditSubmissionUrl = `${this.baseUrl}/${editSubmissionPath}`;
 
-    // const stop1StartEdit = performance.now();
     return await customFetch(fullEditSubmissionUrl, {
       ...this.getCommonFetchOptions(),
       method: 'POST',
@@ -234,7 +217,6 @@ export class OnaApiService {
         });
       })
       .catch((err) => {
-        console.log('==>', { err });
         this.logger?.(
           createErrorLog(
             `Failed to edit sumbission with _id: ${submissionPayload._id} for form with id: ${formId} with err: ${err.message}`
@@ -242,16 +224,6 @@ export class OnaApiService {
         );
         return Result.fail(err);
       });
-    // .finally(() => {
-    //   const stop1StopEdit = performance.now();
-    //   this.logger?.(
-    //     createInfoLog(
-    //       `Editing submission with _id: ${submissionPayload._id} took ${
-    //         stop1StopEdit - stop1StartEdit
-    //       }`
-    //     )
-    //   );
-    // });
   }
 }