Sales Update

When we run sales update having all rows 999 next status of same order, only for two lines having status 620 of same order, but we run Sales update showing following error in work center.

thanks,

Tickler Date : 12/05/2016

Subject : Error: Record Invalid

CAUSE . . . . The record being processed either already exists for an 'ADD'

function or does not exist for an 'INQUIRY', 'CHANGE' or

'DELETE' function.

RESOLUTION. . If you are attempting to inquire, change or delete a record you

previously added, there may be data base problems in your

production library. You should notify your data processing

department.