diff --git a/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/adapter/feign/GitlabClient.kt b/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/adapter/feign/GitlabClient.kt
new file mode 100644
index 0000000..fc31afa
--- /dev/null
+++ b/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/adapter/feign/GitlabClient.kt
@@ -0,0 +1,23 @@
+package net.leanix.vsm.gitlab.broker.connector.adapter.feign
+
+import jakarta.websocket.server.PathParam
+import net.leanix.vsm.gitlab.broker.connector.adapter.feign.data.GitlabUser
+import net.leanix.vsm.gitlab.broker.shared.auth.adapter.feign.GitlabFeignClientConfiguration
+import org.springframework.cloud.openfeign.FeignClient
+import org.springframework.web.bind.annotation.GetMapping
+
+@FeignClient(
+    name = "gitlab",
+    url = "\${leanix.gitlab.base-url}",
+    configuration = [GitlabFeignClientConfiguration::class]
+)
+interface GitlabClient {
+    @GetMapping("/user")
+    fun getCurrentUser(): GitlabUser
+
+    @GetMapping("/users/{userId}")
+    fun getUserById(@PathParam("userId") userId: Int): GitlabUser
+
+    @GetMapping("/projects/{projectName}")
+    fun getProjectByNameWithNamespace(@PathParam("projectName") projectName: String)
+}
diff --git a/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/adapter/feign/GitlabClientProvider.kt b/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/adapter/feign/GitlabClientProvider.kt
new file mode 100644
index 0000000..7994b51
--- /dev/null
+++ b/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/adapter/feign/GitlabClientProvider.kt
@@ -0,0 +1,29 @@
+package net.leanix.vsm.gitlab.broker.connector.adapter.feign
+
+import net.leanix.vsm.gitlab.broker.connector.adapter.feign.data.GitlabUser
+import net.leanix.vsm.gitlab.broker.shared.exception.VsmException
+import org.slf4j.LoggerFactory
+
+class GitlabClientProvider(
+    private val gitlabClient: GitlabClient
+) {
+
+    private val logger = LoggerFactory.getLogger(GitlabClientProvider::class.java)
+
+    fun getCurrentUser(): GitlabUser {
+        val user = kotlin.runCatching { gitlabClient.getCurrentUser() }
+            .onFailure {
+                logger.error("Invalid token, could not get current user")
+                throw VsmException.InvalidToken()
+            }.getOrThrow()
+        return runCatching { gitlabClient.getUserById(user.id) }
+            .onFailure { logger.error("Could not get user with id ${user.id}") }
+            .getOrThrow()
+    }
+
+    fun getOrg(orgName: String) {
+        runCatching { gitlabClient.getProjectByNameWithNamespace(orgName) }
+            .onFailure { logger.error("Could not get org info for $orgName") }
+            .getOrThrow()
+    }
+}
diff --git a/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/adapter/feign/data/GitlabUser.kt b/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/adapter/feign/data/GitlabUser.kt
new file mode 100644
index 0000000..8aecae1
--- /dev/null
+++ b/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/adapter/feign/data/GitlabUser.kt
@@ -0,0 +1,10 @@
+package net.leanix.vsm.gitlab.broker.connector.adapter.feign.data
+
+import com.fasterxml.jackson.annotation.JsonProperty
+
+class GitlabUser(
+    @JsonProperty("id")
+    val id: Int,
+    @JsonProperty("is_admin")
+    val isAdmin: Boolean?
+)
diff --git a/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/application/BaseConnectorService.kt b/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/application/BaseConnectorService.kt
new file mode 100644
index 0000000..97fe809
--- /dev/null
+++ b/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/application/BaseConnectorService.kt
@@ -0,0 +1,64 @@
+package net.leanix.vsm.gitlab.broker.connector.application
+
+import net.leanix.vsm.gitlab.broker.connector.domain.GitLabAssignment
+import net.leanix.vsm.gitlab.broker.logs.application.LoggingService
+import net.leanix.vsm.gitlab.broker.logs.domain.AdminLog
+import net.leanix.vsm.gitlab.broker.logs.domain.LogLevel
+import net.leanix.vsm.gitlab.broker.logs.domain.LogStatus
+import net.leanix.vsm.gitlab.broker.logs.domain.StatusLog
+import org.slf4j.LoggerFactory
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.context.MessageSource
+import java.util.*
+
+open class BaseConnectorService {
+
+    @Autowired
+    private lateinit var loggingService: LoggingService
+
+    @Autowired
+    private lateinit var messageSource: MessageSource
+
+    private val logger = LoggerFactory.getLogger(BaseConnectorService::class.java)
+
+    fun logFailedStatus(message: String? = "empty message", runId: UUID) {
+        logger.error(message)
+        loggingService.sendStatusLog(
+            StatusLog(runId, LogStatus.FAILED, message)
+        )
+    }
+
+    fun logInfoMessages(code: String, arguments: Array<Any>, assignment: GitLabAssignment) {
+        val message = messageSource.getMessage(
+            code,
+            arguments,
+            Locale.ENGLISH
+        )
+        loggingService.sendAdminLog(
+            AdminLog(
+                runId = assignment.runId,
+                configurationId = assignment.configurationId,
+                subject = LogLevel.INFO.toString(),
+                level = LogLevel.INFO,
+                message = message
+            )
+        )
+    }
+
+    fun logFailedMessages(code: String, arguments: Array<Any>, assignment: GitLabAssignment) {
+        val message = messageSource.getMessage(
+            code,
+            arguments,
+            Locale.ENGLISH
+        )
+        loggingService.sendAdminLog(
+            AdminLog(
+                runId = assignment.runId,
+                configurationId = assignment.configurationId,
+                subject = LogLevel.ERROR.toString(),
+                level = LogLevel.ERROR,
+                message = message
+            )
+        )
+    }
+}
diff --git a/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/application/ValidationService.kt b/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/application/ValidationService.kt
new file mode 100644
index 0000000..261be0a
--- /dev/null
+++ b/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/application/ValidationService.kt
@@ -0,0 +1,67 @@
+package net.leanix.vsm.gitlab.broker.connector.application
+
+import feign.FeignException
+import net.leanix.vsm.gitlab.broker.connector.adapter.feign.GitlabClientProvider
+import net.leanix.vsm.gitlab.broker.connector.domain.GitLabAssignment
+import net.leanix.vsm.gitlab.broker.shared.exception.VsmException
+import org.springframework.stereotype.Component
+import java.net.URLEncoder
+
+@Component
+class ValidationService(
+    private val gitlabClientProvider: GitlabClientProvider
+) : BaseConnectorService() {
+
+    fun validateConfiguration(gitLabAssignment: GitLabAssignment) {
+        val orgName = gitLabAssignment.connectorConfiguration.orgName
+        runCatching {
+            validateUserAccess()
+            validateOrgName(gitLabAssignment.connectorConfiguration.orgName)
+        }.onSuccess {
+            logInfoMessages("vsm.configuration.validation.successful", arrayOf(orgName), gitLabAssignment)
+        }.onFailure { exception ->
+            handleExceptions(exception, orgName, gitLabAssignment)
+        }
+    }
+
+    private fun validateUserAccess() {
+        run {
+            val user = gitlabClientProvider.getCurrentUser()
+            if (user.isAdmin != true) throw VsmException.AccessLevelValidationFailed()
+        }
+    }
+
+    private fun validateOrgName(orgName: String) {
+        runCatching {
+            gitlabClientProvider.getOrg(URLEncoder.encode(orgName, "UTF-8"))
+        }.onFailure {
+            throw VsmException.OrgNameValidationFailed()
+        }
+    }
+
+    private fun handleExceptions(
+        exception: Throwable,
+        orgName: String,
+        gitLabAssignment: GitLabAssignment
+    ) {
+        when (exception) {
+            is VsmException.InvalidToken -> {
+                logFailedMessages("vsm.configuration.invalid_token", arrayOf(orgName), gitLabAssignment)
+            }
+
+            is VsmException.AccessLevelValidationFailed -> {
+                logFailedMessages("vsm.configuration.access_level", arrayOf(orgName), gitLabAssignment)
+            }
+
+            is VsmException.OrgNameValidationFailed -> {
+                logFailedMessages("vsm.configuration.invalid_org_name", arrayOf(orgName), gitLabAssignment)
+            }
+
+            is FeignException -> {
+                logFailedMessages("vsm.configuration.validation.failed", arrayOf(orgName), gitLabAssignment)
+            }
+        }
+        logFailedStatus(exception.message, gitLabAssignment.runId)
+        throw exception
+    }
+}
diff --git a/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/runner/InitialStateRunner.kt b/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/runner/InitialStateRunner.kt
index 6543dde..9baa4d3 100644
--- a/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/runner/InitialStateRunner.kt
+++ b/src/main/kotlin/net/leanix/vsm/gitlab/broker/connector/runner/InitialStateRunner.kt
@@ -1,6 +1,7 @@
 package net.leanix.vsm.gitlab.broker.connector.runner
 
 import net.leanix.vsm.gitlab.broker.connector.application.AssignmentService
+import net.leanix.vsm.gitlab.broker.connector.application.ValidationService
 import net.leanix.vsm.gitlab.broker.shared.cache.AssignmentsCache
 import net.leanix.vsm.gitlab.broker.webhook.domain.WebhookService
 import org.slf4j.Logger
@@ -12,6 +13,7 @@ import org.springframework.stereotype.Component
 @Component
 class InitialStateRunner(
     private val assignmentService: AssignmentService,
+    private val validationService: ValidationService,
     private val webhookService: WebhookService
 ) : ApplicationRunner {
 
@@ -30,6 +32,7 @@ class InitialStateRunner(
                     "Received assignment for ${assignment.connectorConfiguration.orgName} " +
                         "with configuration id: ${assignment.configurationId} and with run id: ${assignment.runId}"
                 )
+                validationService.validateConfiguration(assignment)
             }
         }.onSuccess {
             logger.info("Cached ${AssignmentsCache.getAll().size} assignments")
diff --git a/src/main/kotlin/net/leanix/vsm/gitlab/broker/webhook/adapter/feign/GitlabWebhookFeignClientConfiguration.kt b/src/main/kotlin/net/leanix/vsm/gitlab/broker/shared/auth/adapter/feign/GitlabFeignClientConfiguration.kt
similarity index 82%
rename from src/main/kotlin/net/leanix/vsm/gitlab/broker/webhook/adapter/feign/GitlabWebhookFeignClientConfiguration.kt
rename to src/main/kotlin/net/leanix/vsm/gitlab/broker/shared/auth/adapter/feign/GitlabFeignClientConfiguration.kt
index 723c655..2e6aecf 100644
--- a/src/main/kotlin/net/leanix/vsm/gitlab/broker/webhook/adapter/feign/GitlabWebhookFeignClientConfiguration.kt
+++ b/src/main/kotlin/net/leanix/vsm/gitlab/broker/shared/auth/adapter/feign/GitlabFeignClientConfiguration.kt
@@ -1,4 +1,4 @@
-package net.leanix.vsm.gitlab.broker.webhook.adapter.feign
+package net.leanix.vsm.gitlab.broker.shared.auth.adapter.feign
 
 import feign.RequestInterceptor
 import org.springframework.beans.factory.annotation.Value
@@ -6,7 +6,7 @@ import org.springframework.context.annotation.Bean
 import org.springframework.context.annotation.Configuration
 
 @Configuration
-class GitlabWebhookFeignClientConfiguration(
+class GitlabFeignClientConfiguration(
 
     @Value("\${leanix.gitlab.access-token}") private val gitlabAccessToken: String
 ) {
diff --git a/src/main/kotlin/net/leanix/vsm/gitlab/broker/shared/exception/VsmException.kt b/src/main/kotlin/net/leanix/vsm/gitlab/broker/shared/exception/VsmException.kt
new file mode 100644
index 0000000..998bd1e
--- /dev/null
+++ b/src/main/kotlin/net/leanix/vsm/gitlab/broker/shared/exception/VsmException.kt
@@ -0,0 +1,10 @@
+package net.leanix.vsm.gitlab.broker.shared.exception
+
+sealed class VsmException(message: String? = null) : RuntimeException(message) {
+
+    class InvalidToken : VsmException()
+
+    class AccessLevelValidationFailed : VsmException()
+
+    class OrgNameValidationFailed : VsmException()
+}
diff --git a/src/main/kotlin/net/leanix/vsm/gitlab/broker/webhook/adapter/feign/GitlabWebhookClient.kt b/src/main/kotlin/net/leanix/vsm/gitlab/broker/webhook/adapter/feign/GitlabWebhookClient.kt
index 315a066..b57fa27 100644
--- a/src/main/kotlin/net/leanix/vsm/gitlab/broker/webhook/adapter/feign/GitlabWebhookClient.kt
+++ b/src/main/kotlin/net/leanix/vsm/gitlab/broker/webhook/adapter/feign/GitlabWebhookClient.kt
@@ -1,5 +1,6 @@
 package net.leanix.vsm.gitlab.broker.webhook.adapter.feign
 
+import net.leanix.vsm.gitlab.broker.shared.auth.adapter.feign.GitlabFeignClientConfiguration
 import net.leanix.vsm.gitlab.broker.webhook.domain.GitlabWebhook
 import org.springframework.cloud.openfeign.FeignClient
 import org.springframework.web.bind.annotation.DeleteMapping
@@ -11,7 +12,7 @@ import org.springframework.web.bind.annotation.RequestParam
 @FeignClient(
     name = "gitlabWebhookClient",
     url = "\${leanix.gitlab.base-url}",
-    configuration = [GitlabWebhookFeignClientConfiguration::class]
+    configuration = [GitlabFeignClientConfiguration::class]
 )
 interface GitlabWebhookClient {
 
diff --git a/src/main/resources/messages.properties b/src/main/resources/messages.properties
new file mode 100644
index 0000000..416e245
--- /dev/null
+++ b/src/main/resources/messages.properties
@@ -0,0 +1,5 @@
+vsm.configuration.validation.successful=Validation successful for configuration with organisation name {0}
+vsm.configuration.validation.failed=Validation failed for configuration with organisation name {0}
+vsm.configuration.invalid_token=Invalid token in configuration with organisation name {0}
+vsm.configuration.access_level=Access level insufficient for configuration with organisation name {0}
+vsm.configuration.invalid_org_name=Invalid organisation name in configuration with organisation name {0}