SAP BASIS ERROR during unicode conversion:error during conversion of cluster item

(DB) INFO: REGUC created #20120710113304

myCluster (55.23.Imp): 1596: inconsistent field count detected.

myCluster (55.23.Imp): 1599: nametab says field count (TDESCR) is 179.

myCluster (55.23.Imp): 1602: alternate nametab says field count (TDESCR) is 181.

myCluster (55.23.Imp): 1270: unable to retrieve nametab info for logic table REGUP     .

myCluster (55.23.Imp): 8166: unable to retrieve nametab info for logic table REGUP     .

myCluster (55.23.Imp): 2687: failed to convert cluster data of cluster item.

myCluster: REGUC      **700****20060206****00001O**** ****1000****0000310014****          ****                ****0100000002**

myCluster (55.23.Imp): 324: error during conversion of cluster item.

myCluster (55.23.Imp): 327: affected physical table is REGUC.

(CNV) ERROR: data conversion failed.  rc = 2

(DB) INFO: disconnected from DB

/sapmnt/PRD/exe/R3load: job finished with 1 error(s)

/sapmnt/PRD/exe/R3load: END OF LOG: 20120710113310

Solution : 

1. Incorrect data should be removed from source system before export of ABAP Database System.

2. At target System stop the current database import phase and perform under 

/tmp/sapinst_instdir/ECC50/COPY/IMPORT/SYSTEM/ABAP/ORA/UC/DB

and 

•  Modify DDL<dbs>.TPL (<dbs> = ADA, DB2, DB4, DB6, IND, MSS, ORA) before the R3load TSK files are generated; search for the keyword "negdat:" and add "REGUC" and "VER_CLUSTR" to this line.

•  Modify the TSK file (most probably SAPCLUST.TSK) before the R3load import is (re-)started; search for the lines starting with "D REGUC I" and "D VER_CLUSTR I" and change the status (i.e. "err" or "xeq") to "ign" or remove the lines.

Also Refer SAP Note Number : 967124

3. Restart the database import phase .