fix: Updating CreateConnection method for passing additional_info in …

…Updating Create Connection method in Fabric connection Resource (#661)

- Updated resourceFabricConnectionCreate method by passing
additional_info parameters only when it's required

equinix/resource_fabric_connection.go

@@ -644,12 +644,6 @@ func resourceFabricConnectionCreate(ctx context.Context, d *schema.ResourceData,
 		createConnectionRequest.SetProject(project)
 	}
 
-	additionalInfoTerraConfig, ok := d.GetOk("additional_info")
-	if ok {
-		additionalInfo := additionalInfoTerraformToGo(additionalInfoTerraConfig.([]interface{}))
-		createConnectionRequest.SetAdditionalInfo(additionalInfo)
-	}
-
 	aSide := d.Get("a_side").(*schema.Set).List()
 	connectionASide := connectionSideTerraformToGo(aSide)
 	createConnectionRequest.SetASide(connectionASide)
@@ -658,6 +652,19 @@ func resourceFabricConnectionCreate(ctx context.Context, d *schema.ResourceData,
 	connectionZSide := connectionSideTerraformToGo(zSide)
 	createConnectionRequest.SetZSide(connectionZSide)
 
+	additionalInfoTerraConfig, ok := d.GetOk("additional_info")
+	if ok {
+		zSideAccessPoint := connectionZSide.GetAccessPoint()
+		zSideAccessPointServiceProfile := zSideAccessPoint.GetProfile()
+		serviceProfile, _, _ := client.ServiceProfilesApi.GetServiceProfileByUuid(ctx, zSideAccessPointServiceProfile.GetUuid()).Execute()
+		customFields := serviceProfile.GetCustomFields()
+
+		if len(customFields) != 0 {
+			additionalInfo := additionalInfoTerraformToGo(additionalInfoTerraConfig.([]interface{}))
+			createConnectionRequest.SetAdditionalInfo(additionalInfo)
+		}
+	}
+
 	start := time.Now()
 	conn, _, err := client.ConnectionsApi.CreateConnection(ctx).ConnectionPostRequest(createConnectionRequest).Execute()
 	if err != nil {