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FDM: When using HASHLOV with Custom Seedlist we are seeing all values return as NULL


Article ID: 238872


Updated On:


CA Test Data Manager (Data Finder / Grid Tools)


When running a Masking job with HASHLOV and selecting the custom seedlist, we are seeing FDM return all NULL values when loading the custom table. The Scramble database is on SQL Server 2019c, and we used the SQL Server Management Studio (SSMS) to manually import the custom seedlist into the gtsrc_reference_data table from an excel file.

With the masking job in debug (diaglevel=5) we see the following in the log file:

2022-03-29 13:24:47.871 loadSeedData p1=CUSTOM_PERSON_NAMES p2=4 
2022-03-29 13:24:47.871 Total Memory: 958 
2022-03-29 13:24:47.871 Free Memory: 870 
2022-03-29 13:24:47.871 Used Memory: 87 
2022-03-29 13:24:47.871 Max Memory: 3556 
2022-03-29 13:24:47.871 loading seed data category CUSTOM_PERSON_NAMES and column 4 at 2022.03.29 13:24:47.871 UTC 
2022-03-29 13:24:47.902 executing seed table sql:select rd_ref_value,rd_ref_value2,rd_ref_value3,rd_ref_value4,rd_ref_value5,rd_ref_value6,rd_ref_value7,rd_ref_value8,rd_ref_value9,rd_index from dbo.gtsrc_reference_data where rd_ref_id = 'CUSTOM_PERSON_NAMES' order by rd_index 
2022-03-29 13:24:47.918 stepping through seed table cursor... 
2022-03-29 13:24:48.058 Seed Values for:CUSTOM_PERSON_NAMES 
2022-03-29 13:24:48.058 0:null 
2022-03-29 13:24:48.058 1:null 
2022-03-29 13:24:48.058 2:null 
2022-03-29 13:24:48.058 3:null 
2022-03-29 13:24:48.058 4:null 
2022-03-29 18:54:09.689 49997:null 
2022-03-29 18:54:09.689 49998:null 
2022-03-29 18:54:09.689 49999:null

The data contained in the excel file looks like:

rd_ref_id rd_ref_value rd_old_value rd_ref_value2 rd_ref_value3 rd_ref_value4 rd_ref_value5 rd_ref_value6 rd_ref_value7 rd_ref_value8 rd_ref_value9 rd_index
CUSTOM_PERSON_NAMES Dante   Brown Smith Smith, Dante Brown Dante B Smith Dante B. Smith Dante Brown Smith Dante Smith [email protected] 71186
CUSTOM_PERSON_NAMES Iluminada   Roberts Johnson Johnson, Iluminada Roberts Iluminada R Johnson Iluminada R. Johnson Iluminada Roberts Johnson Iluminada Johnson [email protected] 71187
CUSTOM_PERSON_NAMES Apolonia   Turner Williams Williams, Apolonia Turner Apolonia T Williams Apolonia T. Williams Apolonia Turner Williams Apolonia Williams [email protected] 71188



The issue is related to the rd_index values for the 'CUSTOM_PERSON_NAMES' category/group. Looking at the sample of the excel file, the rd_index values start at 71,186. The rd-index value is not a unique index value for the entire table. Instead, each category/group will start at 1 for the group's indexing. By starting the rd_index for this group starts at 71,186, which is greater than 50,000, when loading the table we have NULL values for 1-50,000 because those index values do not exist.


Release : 4.10

Component : Fast Data Masker


To resolve this, modify the rd_index values for 'CUSTOM_PERSON_NAMES' category/group, and start the indexing at 1 - 50,000.


Additional Information

The preferred method is to use Datamaker to add your custom tables. Datamaker will handle the indexing for you.

See for adding a custom seedtable through Datamaker.