Message type: E = Error
Message class:  FIAAIN_EMSG - Message Class for CI IN Assets 
Message number: 004
Message text: No authorization for company code &
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.
Unfortunately, there isn't any extra information in this error notice.
First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).
Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.
You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.
The SAP error message FIAAIN_EMSG004 indicates that a user does not have the necessary authorization to perform actions related to a specific company code. This error typically arises in the context of financial transactions, such as asset accounting, where access to certain company codes is restricted based on user roles and authorizations.
Cause: Missing Authorization: The user does not have the required authorization for the specified company code. Role Assignment: The user’s role may not include access to the company code in question. Authorization Object: The relevant authorization object (e.g., F_BKPF_BES, F_BKPF_BUK) may not be properly configured or assigned to the user. Company Code Configuration: The company code may be set up in a way that restricts access to certain users.
Solution: Check User Roles: Go to transaction SU01 (User Maintenance) and enter the user ID. Check the roles assigned to the user and ensure that the necessary roles for the company code are included. Review Authorization Objects: Use transaction SU53
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
FIAAIN_EMSG003 Enter company code
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FIAAIN_EMSG002 No entries for the selection criteria
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FIAAIT_IS001 The value of parameter &1 (&2) has not been configured for &3, &4
What causes this issue?  The value of mandatory parameter ID &V1& , name &V2& has not been configured for Report Category &V3&...
FIAAIT_IS002 Key Figure Group &1 (configured for &2, &3) does not exist.
What causes this issue?  Key Figure Group &V1&<(>,<)>customized for Report Category &V2& and Reporting Entity &V3&...
Click on this link to search all SAP messages.