How To Fix WL406 - Maximum nesting level reached

SAP Error Message - Details

• Message type: E = Error

• Message class: WL - Workflow: run-time messages

• Message number: 406

• Message text: Maximum nesting level reached

What causes this issue?

In an attempt to start a subworkflow step, the maximum permitted
nesting depth has been exceeded.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

INCLUDE NA_WF_ERROR OBJECT DOKU ID TX

How to fix this error?

The maximum eligible nesting depth for subworkflow calls serves as a
simple mechanism to discover unintentionl recursions ("endless loops").
The value can be set in the workflow administration.
Check the workflow execution: If you actually require more than the
currently set nesting depth, then contact your workflow system
administrator and have the value increased to an appropriate upper
limit. Then continue the stopped workflow execution.
If the workflow execution runs in an unintentional endless loop or
recursion, then you must check why this occurred and correct the
relevant workflow definition(s). Attention: A recursion can possibly
involve several workflow definitions (indirect recursive workflows).

Procedure for System Administrators

You can change the upper limit in <LS>Customizing workflow runtime</>
(transaction <AB>SWPA</>) in the basic settings of the workflow
runtime.

Error message extract from SAP system. Copyright SAP SE.