diff --git a/irs-edc-client/src/main/java/org/eclipse/tractusx/irs/edc/client/contract/model/EdcContractAgreementRequest.java b/irs-edc-client/src/main/java/org/eclipse/tractusx/irs/edc/client/contract/model/EdcContractAgreementRequest.java
index fd6e9f9319..cef9e6aece 100644
--- a/irs-edc-client/src/main/java/org/eclipse/tractusx/irs/edc/client/contract/model/EdcContractAgreementRequest.java
+++ b/irs-edc-client/src/main/java/org/eclipse/tractusx/irs/edc/client/contract/model/EdcContractAgreementRequest.java
@@ -27,7 +27,7 @@
  * EdcContractAgreementRequest represents the request to management/v2/contractagreements/request
  */
 public record EdcContractAgreementRequest(@JsonProperty(
-        "https://w3id.org/edc/v0.0.1/ns/filterExpression") List<EdcContractAgreementFilterExpression> edcContractAgreementFilterExpressions) {
+        "https://w3id.org/edc/v0.0.1/ns/filterExpression") EdcContractAgreementFilterExpression edcContractAgreementFilterExpressions) {
     /**
      * EdcContractAgreementFilterExpression represents the filterExpression
      * for EdcContractAgreementRequest
@@ -35,7 +35,7 @@ public record EdcContractAgreementRequest(@JsonProperty(
     public record EdcContractAgreementFilterExpression(
             @JsonProperty("https://w3id.org/edc/v0.0.1/ns/operandLeft") String operandLeft,
             @JsonProperty("https://w3id.org/edc/v0.0.1/ns/operator") String operator,
-            @JsonProperty("https://w3id.org/edc/v0.0.1/ns/operandRight") String operandRight) {
+            @JsonProperty("https://w3id.org/edc/v0.0.1/ns/operandRight") List<String> operandRight) {
 
     }
 }
diff --git a/irs-edc-client/src/main/java/org/eclipse/tractusx/irs/edc/client/contract/service/EdcContractAgreementService.java b/irs-edc-client/src/main/java/org/eclipse/tractusx/irs/edc/client/contract/service/EdcContractAgreementService.java
index 85677c578a..149f9debaf 100644
--- a/irs-edc-client/src/main/java/org/eclipse/tractusx/irs/edc/client/contract/service/EdcContractAgreementService.java
+++ b/irs-edc-client/src/main/java/org/eclipse/tractusx/irs/edc/client/contract/service/EdcContractAgreementService.java
@@ -19,7 +19,6 @@
  ********************************************************************************/
 package org.eclipse.tractusx.irs.edc.client.contract.service;
 
-import java.util.Arrays;
 import java.util.List;
 
 import lombok.extern.slf4j.Slf4j;
@@ -48,7 +47,7 @@
 public class EdcContractAgreementService {
 
     public static final String EDC_REQUEST_SUFFIX = "/request";
-    public static final String EDC_CONTRACT_AGREEMENT_ID = "https://w3id.org/edc/v0.0.1/ns/id";
+    public static final String EDC_CONTRACT_AGREEMENT_ID = "id";
     private final EdcConfiguration config;
     private final RestTemplate edcRestTemplate;
 
@@ -58,7 +57,7 @@ public EdcContractAgreementService(final EdcConfiguration config,
         this.edcRestTemplate = edcRestTemplate;
     }
 
-    public List<EdcContractAgreementsResponse> getContractAgreements(final String... contractAgreementIds)
+    public List<EdcContractAgreementsResponse> getContractAgreements(final List<String> contractAgreementIds)
             throws ContractAgreementException {
 
         final EdcContractAgreementRequest edcContractAgreementRequest = buildContractAgreementRequest(
@@ -89,14 +88,12 @@ public EdcContractAgreementNegotiationResponse getContractAgreementNegotiation(f
         return contractNegotiationResponseEntity.getBody();
     }
 
-    private EdcContractAgreementRequest buildContractAgreementRequest(final String... contractAgreementIds) {
+    private EdcContractAgreementRequest buildContractAgreementRequest(final List<String> contractAgreementIds) {
 
-        final List<EdcContractAgreementFilterExpression> list = Arrays.stream(contractAgreementIds)
-                                                                      .map(s -> new EdcContractAgreementFilterExpression(
-                                                                              EDC_CONTRACT_AGREEMENT_ID, "=", s))
-                                                                      .toList();
+        final EdcContractAgreementFilterExpression edcContractAgreementFilterExpression = new EdcContractAgreementFilterExpression(
+                EDC_CONTRACT_AGREEMENT_ID, "in", contractAgreementIds);
 
-        return new EdcContractAgreementRequest(list);
+        return new EdcContractAgreementRequest(edcContractAgreementFilterExpression);
     }
 
     private HttpHeaders headers() {
diff --git a/irs-edc-client/src/test/java/org/eclipse/tractusx/irs/edc/client/contract/service/EdcContractAgreementServiceTest.java b/irs-edc-client/src/test/java/org/eclipse/tractusx/irs/edc/client/contract/service/EdcContractAgreementServiceTest.java
index d6e5245db8..7af50f54a5 100644
--- a/irs-edc-client/src/test/java/org/eclipse/tractusx/irs/edc/client/contract/service/EdcContractAgreementServiceTest.java
+++ b/irs-edc-client/src/test/java/org/eclipse/tractusx/irs/edc/client/contract/service/EdcContractAgreementServiceTest.java
@@ -66,7 +66,7 @@ void setUp() {
     @Test
     void shouldReturnContractAgreements() throws ContractAgreementException {
         //GIVEN
-        String[] contractAgreementIds = { "contractAgreementId" };
+        List<String> contractAgreementIds = List.of("contractAgreementId");
 
         final EdcContractAgreementsResponse[] edcContractAgreementsResponse = new EdcContractAgreementsResponse[1];
         edcContractAgreementsResponse[0] = EdcContractAgreementsResponse.builder().contractAgreementId("id")
@@ -93,7 +93,7 @@ void shouldReturnContractAgreements() throws ContractAgreementException {
     @Test
     void shouldThrowContractAgreementExceptionWhenResponseBodyIsEmtpy() {
         //GIVEN
-        String[] contractAgreementIds = { "contractAgreementId" };
+        List<String> contractAgreementIds = List.of("contractAgreementId");
 
         when(restTemplate.exchange(anyString(), any(), any(), eq(EdcContractAgreementsResponse[].class))).thenReturn(
                 ResponseEntity.ok(new EdcContractAgreementsResponse[0]));