vardef error during repair (related to customoizations)

[sptrsn]

We had some custom work done a while back. The first guy completely left us hanging. The second guy got it mostly working, but never really got it working 100%.

So, here is one of the problems...
When I run repair/rebuild. it generates this error.

/* Table : raz_payments */
/*COLUMNS*/
/*MISMATCH WITH DATABASE - currency_id - ROW [name] => 'currency_id' [type] => 'char' [len] => '36' */
/* VARDEF - currency_id - ROW[required] => '' [name] => 'currency_id' [vname] => 'LBL_CURRENCY' [type] => 'char' [massupdate] => '0' [comments] => '' [help] => '' [importable] => 'true' [duplicate_merge] => 'disabled' [duplicate_merge_dom_value] => '0' [audited] => '0' [reportable] => '0' [len] => '255' [studio] => 'visible' [function] => 'Array' [dbType] => 'id' */
/* INDEXES */
ALTER TABLE raz_payments modify column currency_id char(36) NUL

Can someone suggest the best way to fix this. Should I modify the table or per the error msg suggestion.
It won't do it on it's own.

running 5.1 on shared webhost.

Thanks,
Steve

[Editha]

I would try to change the vardefs.php of the concerned module.
in <sugarroot>/modules/<your_module>/vardefs.php:

'currency_id' => array (
//-- check these fielddefs start
'required' => true,
'len' => '36',
'type' => 'id',
//-- check these fielddefs end