In my custom module i delete field but the Label associate to this field is still visible in the lablels liste
Can you help me with this issue
If you create a custom field myfield in studio, the field is named myfield_c anf a label LBL_MYFIELD is created.
When you delete your custom field it depends on the version you are using whether the lable is deleted or not.
If it is not deleted and you want to get rid of it, you have to edit all language files in custom/Extension/modules/<modulename>/Ext/Language/ which follow the naming <language>.lang.php.
<language> is each of the supported languages like en_us, DE_de, FR_fr,... a.s.o.
In these files you find a line like
$mod_strings['LBL_MYFIELD'] = 'Myfield';
Just delete these lines.
Then call admin - repair - quick-repair and rebuild and the labe will be gone.
... just let it there it is and ignore it in the labels list.
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