Validate System ZD00 failed

Document ID : KB000093145
Last Modified Date : 27/08/2018
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Question:
I am getting a Validate System ZD00 failed and messages below:
ZD00:/appl/coz/samples: > bpxmtext 055B005C 
BPXFSMNT 06/23/16 
JRMountPt: A problem was found with the mount point specified 


The MSMTC shows the file system that failed to mount was: 
BPXF274I FILE SYSTEM SUPT.OMVS.ZD00.APPL.CACSM.CASC1 
FAILED TO MOUNT RETURN CODE = 00000079, REASON CODE = 055B005C 


The return code:  0079 is EINVAL.
The Reason Code: 055B005C indicates that for return code EIVAL indicates that the file system may already be mounted.

To check, I issued the following command: 
df -Pkv | grep /pathname/.../filesystem/name/from/msmtc/

Indeed the file system was already mounted: 
For example: 
df -Pkv | /appl/cacsm/u/users/msmserv/mpm/scroot/DatabaseM/cars
ZD00:/appl/coz/samples: > df -Pkv | grep /appl/cacsm/u/users/msmserv/mpm/scroot/DatabaseM/cars 
SUPT.OMVS.ZD00.APPL.CACSM.CASC170 5040 3841 1199 77% /appl/cacsm/u/users/msmserv/mpm/scroot/DatabaseM/cars


Once I have determined which is the correct filesystem to keep, how do I delete the other filesystem that I do not want mounted? 
Answer:
1. The MSMTC will show the file system that failed to mount was: 
For example: 
BPXF274I FILE SYSTEM SUPT.OMVS.ZD00.APPL.CACSM.CASC1 
FAILED TO MOUNT RETURN CODE = 00000079, REASON CODE = 055B005C 


2. Run the DBSQLPR Utility with the following input:
//OPTIONS DD * 
AUTHID=CASWMGT 
//SYSIN DD * 
SELECT * FROM MOUNTPOINT; 
/* 


3. The output from the above DBSQLPR Report shows the TWO mountpoints
for the same pathname: 

For example: 
/appl/cacsm/u/users/msmserv/mpm/scroot/DatabaseM/cars 
\MOUNTPOINTID, <3>, INT NOT NULL 
 MP_PATH, < /appl/cacsm/u/users/msmserv/mpm/scroot/DatabaseM/cars>, VARCHAR(53/240) 
 MP_DATASET, < SUPT.OMVS.ZD00.APPL.CACSM.CASC1>, VARCHAR(31/45) 
 MP_TYPE, <*> (NULL), VARCHAR(20) 
 MP_OPTIONS, < ZFS>, VARCHAR(3/2000) 

MOUNTPOINTID, <555>, INT NOT NULL 
 MP_PATH, < /appl/cacsm/u/users/msmserv/mpm/scroot/DatabaseM/cars>, VARCHAR(53/240) 
 MP_DATASET, < SUPT.OMVS.ZD00.APPL.CACSM.CASC170>, VARCHAR(33/45) 
 MP_TYPE, <*> (NULL), VARCHAR(20) 
 MP_OPTIONS, < ZFS>, VARCHAR(3/2000) 


4. The user must first determine which is the correct filesystem should be mounted to that MOUNTPOINT.

5. After it has been determined delete the MOUNTPOINT for the incorrect filesystem.
Use the DBSQLPR Utility to delete the MOUNTPOINT for the incorrect filesystem.

For example: 
//SYSIN DD * DELETE FROM MOUNTPOINT WHERE MP_DATASET = 'SUPT.OMVS.ZD00.APPL.CACSM.CASC1'; -

 
Additional Information:
https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.1.0/com.ibm.zos.v2r1.ieam300/bpxf274i.htm