When created custom button which pass over parameters from contact page to my custom object I found a problem that in some case passing just Account name is not enough. Especially when you have many account with the same name.

/a06/e?CF00ND0000003TF9r={!Contact.Name}&
CF00ND0000003TF9r_lkid={!Contact.Id}&
CF00ND0000002on1t={!Account.Name}&
retURL=%2F003D000000sI3iO

When you will add also "ID_lkid" then it is more precise:

/a06/e?CF00ND0000003TF9r={!Contact.Name}&
CF00ND0000003TF9r_lkid={!Contact.Id}&
CF00ND0000002on1t={!Account.Name}&
CF00ND0000002on1t_lkid={!Account.Id}&
retURL=%2F003D000000sI3iO

No error now.

Passing only ID is not enough, then you will get empty field.

   
© Paweł Woźniak