https://answers.axonivy.com/questions/4550/ivy-repo-save-recursive-error<p>Hi Comunity,</p> <p>When i use the ivy.repo.save to save my business data. I got an error as below:</p> <p>java.lang.StackOverflowError JsonMappingException: Infinite recursion (StackOverflowError) (through reference chain: java.util.ArrayList[0]-&gt;ch.ivyteam.ivy.security.internal.Role["users"]-&gt;ch.ivyteam.ivy.persistence.client.PersistentClientObjectList[0]-&gt;ch.ivyteam.ivy.security.internal.User["allRoles"]-&gt;.....</p> <pre><code>IvyRuntimeException: com.fasterxml.jackson.databind.JsonMappingException: Infinite recursion (StackOverflowError) (through reference chain: java.util.ArrayList[0]-&gt;ch.ivyteam.ivy.security.internal.Role["users"]-&gt;ch.ivyteam.ivy.persistence.client.PersistentClientObjectList[0]-&gt;ch.ivyteam.ivy.security.internal.User["allRoles"]..... IvyScriptMethodInvocationException: Error calling method save(Object) on an object of class ch.ivyteam.ivy.business.data.store.internal.BusinessDataRepositoryImpl. IvyScriptRuntimeException: IvyScript Runtime Exception in Instruction: ivy.repo.save(in.groundwaterProtectionZones) </code></pre> <p>Could any one help me to explain why it happen and how to solve it? Thanks</p>enMon, 04 May 2020 13:46:29 -0400https://answers.axonivy.com/questions/4550/ivy-repo-save-recursive-error/4554<p>You are trying to persist a collection of ivy-core user objects. And these are long recursive trees. Which even lead to a stack overflow if you try to serialize them.</p> <p>However, normally this happens by an accident when designing your Data. And I'd simply remove that object from the object tree before serializing. I didn't test it but think that either by removing 'persist' flags on the DataClass or if you are persisting a normal java object, just mark the field and it's getters with <code>@JsonIgnore</code>. See <a href="https://dev.axonivy.com/doc/8.0/designer-guide/data-modeling/business-data.html#field-without-get-setter">https://dev.axonivy.com/doc/8.0/designer-guide/data-modeling/business-data.html#field-without-get-setter</a></p>Reguel WermelingerMon, 04 May 2020 13:46:29 -0400https://answers.axonivy.com/questions/4550/ivy-repo-save-recursive-error/4554