The structure indicator is a key that defines the allowed characters and the hierarchy levels of the functional location structure. It consists of an edit mask and a hierarchy indicator. The edit mask defines the allowed characters for each position of the functional location identification. The hierarchy indicator defines the hierarchy levels of the functional location structure and the number of characters for each level. For example, a structure indicator with the edit mask ANNNN-NNNN and the hierarchy indicator 5-4 means that the functional location identification can have up to 9 alphanumeric characters, divided into two levels with 5 and 4 characters respectively, separated by a hyphen. The structure indicator does not limit the types of characters to alpha and numeric, as it can also include special characters, such as hyphens, slashes, or dots. Therefore, answer A is incorrect. The structure indicator also does not restrict the number of hierarchical levels to no more than 6, as it can have up to 10 levels. Therefore, answer B is also incorrect.Reference:Explaining Technical Asset Structures - SAP LearningandOrganizational Elements and Structures | SAP Help Portal.

A maintenance order with status REL means that the order is released and ready for execution. At this stage, the following characteristics apply:

A . Goods receipts for external services can be entered. This is true because external services are procured through purchase orders that are linked to the maintenance order. The service performer can post service entry sheets to record the executed work and consumable materials.These service entry sheets can be approved and posted as goods receipts for external services1.

B . The planner can change planned costs at the operation level. This is false because once the order is released, the planned costs are frozen and cannot be changed by the planner.The planner can only change the estimated costs at the header level2.

C . The planner can change estimated costs only at the header level. This is true, but it is not a characteristic of a released order.The planner can change the estimated costs at any time, even before the order is released2.

D . The controller can determine actual cost surcharges. This is true because the controller can use the business function LOG_EAM_CI_7 to calculate and post actual cost surcharges for maintenance orders.This function can be used for orders with status REL or TECO3.

When planning maintenance work that is to be carried out by an external company, you have to consider the following aspects:

If you assign a control key with indicator ''Service'' for an external service, you have to enter the actual values via the service entry sheet. This is because the service entry sheet is used to record the services performed by the external company and to verify the invoice. The service entry sheet is linked to the purchase order and the maintenance order operation.

For the maintenance order type, you have to assign the Enhanced Procurement Mode. This is because the Enhanced Procurement Mode enables you to use lean services and enhanced limits for external services. Lean services are intended for the procurement of small or highly specialized services that are carried out by external suppliers as part of an internal or external operation. They can be maintained in the material master as service products. Enhanced limits allow you to define a maximum amount for the external service without specifying the service specifications in advance.

If you assign a control key for an external order operation, the actual values must always be entered as a goods receipt in the system. This is not true, because the goods receipt is only required for external materials, not for external services. For external services, the service entry sheet is used instead.

In the control key assigned to the order operation, the ''Service'' indicator must always be activated. This is not true, because the ''Service'' indicator is only required for external services, not for external operations. For external operations, the ''External Processing'' indicator must be activated instead.Reference:External Services Management (MM-SRV) | SAP Help Portal,Highlights for Asset Management in SAP S/4HANA 2021 | SAP Blogs.