Error: IDS Custom Signature Processing is already going on. Please try after sometime. (Error code: 523966)

Products

• VMware vDefend Firewall with Advanced Threat Prevention

Issue/Introduction

• NSX version 4.2.X or 9.0 is in use 
• NSX Federation may be used.
  • While Federation is in use the configuation was made under the NSX Local Managers.
• When creating a IDPS Custom signature the user may observe error "IDS Custom Signature Processing is already going on. Please try after sometime. (Error code: 523966)"
  • The same error can be found on the NSX Manager in log file /var/log/proton/nsxapi.log

2025-10-06T18:08:42.215Z  WARN NSX 90639 [nsx@4413 comp="nsx-manager" level="WARNING" logger="PolicyIDSUtils" msgID="POLICY" reqId="########################" subcomp="manager" threadName="http-nio-127.0.0.1-7440-exec-25" username="admin"] No mapping found for this site
2025-10-06T18:08:42.218Z  INFO NSX 90639 [nsx@4413 comp="nsx-manager" level="INFO" logger="PolicyIDSCustomSignatureVersionServiceImpl" msgID="POLICY" reqId="########################" subcomp="manager" threadName="http-nio-127.0.0.1-7440-exec-25" username="admin"] Updating the status of Version /infra/settings/firewall/security/intrusion-services/custom-signature-versions/<Custom-Signature-Version-ID>, from IN_PROGRESS to IN_PROGRESS
2025-10-06T18:08:42.218Z ERROR NSX 90639 [nsx@4413 comp="nsx-manager" errorCode="PM523966" level="ERROR" logger="PolicyIDSCustomSignatureVersionServiceImpl" msgID="POLICY" reqId="################################" subcomp="manager" threadName="http-nio-127.0.0.1-7440-exec-25" username="admin"] IDS Custom Signature Processing is already going on. Please try after sometime.

• The status "IN-PROGRESS" is displayed while running GET API "/policy/api/v1/infra/settings/firewall/security/intrusion-services/custom-signature-versions/<Custom-Signature-ID>/" 

{
    "status": "IN-PROGRESS",
    "publish_time": ################,
    "resource_type": "IdsCustomSignatureVersion",
    "id": "#####################",
    "display_name": "Custom-Signatures-1",
    "path": "/infra/settings/firewall/security/intrusion-services/custom-signature-versions/#################",
    "relative_path": "Custom-Signatures-1",
    "parent_path": "/infra",
    "remote_path": "",
    "unique_id": "#######################",
    "realization_id": "##########################",
    "owner_id": "##########################",
    "marked_for_delete": false,
    "overridden": false,
    "version_id": "########################",
    "state": "ACTIVE",
    "_system_owned": false,
    "_protection": "NOT_PROTECTED",
    "_create_time": #################,
    "_create_user": "admin",
    "_last_modified_time": ##############,
    "_last_modified_user": "admin",
    "_revision": 3
}

Note: The preceding log excerpts are only examples. Date, time, and environmental variables may vary depending on your environment.

Environment

vDefend Firewall 4.2.X

vDefend Firewall 9.0

Cause

• A POST API call is sent to add a custom signature preview.  
• A validation API being sent twice containing a delete payload results in the preview of the signature no longer existing.
• This causes the custom signature realization to be stuck in progress.

Resolution

• This issue is resolved in NSX version 9.0.2
• For a workaround, please open a support request with Broadcom Support.
  • The workaround may need to be applied before upgrade.

Additional Information