The collection of Application Specific Messages (ASM) is equiped with a workflow allowing contractors to add ASM's but the (National) Competent Authority is the only one to allow or disallow a new or old ASM.

The workflow of ASM consists of the following states:

1. Initiation;
2. Draft;
3. Proposal;
4. Testing;
5. Accepted (only competent authority);
6. In force (only competent authority);
7. Deprecated (only competent authority);
8. Replaced (only competent authority);
9. Discontinued (only competent authority).

Contractors/suppliers can get access to the collection for making a new ASM only by permission of a competent authority. 

For making a ASM a DAC and FI is needed. These can only be given by a competent authority.