LDM0521E File server request failed with return code=64 reason code=640

Products

• CIS
• COMMON SERVICES FOR Z/OS
• 90S SERVICES
• DATABASE MANAGEMENT SOLUTIONS FOR DB2 FOR Z/OS
• COMMON PRODUCT SERVICES COMPONENT
• Common Services
• Datacom/AD
• CA ECOMETER SERVER COMPONENT FOC
• Easytrieve Report Generator for Common Services
• INFOCAI MAINTENANCE
• IPC
• UNICENTER JCLCHECK COMMON COMPONENT
• Mainframe VM Product Manager
• CHORUS SOFTWARE MANAGER
• CA ON DEMAND PORTAL
• CA Service Desk Manager - Unified Self Service
• PAM CLIENT FOR LINUX ON MAINFRAME
• MAINFRAME CONNECTOR FOR LINUX ON MAINFRAME
• GRAPHICAL MANAGEMENT INTERFACE
• WEB ADMINISTRATOR FOR TOP SECRET
• Xpertware
• Compress Data Compression for MVS
• Compress Data Compression for Fujitsu
• Endevor
• Endevor Natural Integration
• Endevor - ECLIPSE Plugin
• Endevor - Enterprise Workbench
• Bundl

Issue/Introduction

LServ issued error message "LDM0521E File server request failed - function=0 ddname=ddnameid return code=64 reason code=640"
Function code , return code or reason code explanation for LDM0521E are not documented.
Can this message relate to permissions' changes ?

Environment

Release: CA90SV00200-14.1-Common Services-for z/OS
Component:

Resolution

The message "LDM0521E File server request failed - function=0 ddname=FILE3 return code=64 reason code=640" is issued because of a security concern vs the dataset.
A Reason code '640' for function means a user is trying a get to the file that is not OPEN.
Typically this is a security issue meaning the OPEN failed due to security but now the user is advancing and trying to get/put to the dataset.
When using LServ, the user must be granted the correct access via the $LSRVDSN resource class that gets defined.

Please review the access authority vs the dataset defined as ddname=ddnameid and make any corrections as needed.